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Full vulnerability report · 2025
CVE-2025-39902High confidence

mm/slub: avoid accessing metadata when pointer is invalid in object_err()

Linux · Linux

7.1HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 21 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Medium, lowered one band.downgradedsince 5 Aug 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.16% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Linux Linux and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 21 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

25 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 21 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.12.48-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.1.153-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.16.6-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.16.6-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinuxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-awsAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azureAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-fdeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcpAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gkeopAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-ibmAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-intelAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidiaAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-lowlatencyAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-nvidia-tegraAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oracleAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-xilinxAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2025-39902 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitykernel: mm/slub: avoid accessing metadata when pointer is invalid in object_err()
212 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • kernel as a component of Red Hat Enterprise Linux 10
  • kernel-64k as a component of Red Hat Enterprise Linux 10
  • kernel-64k-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-devel as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-devel-matched as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules-core as a component of Red Hat Enterprise Linux 10
  • kernel-64k-debug-modules-extra as a component of Red Hat Enterprise Linux 10
  • kernel-64k-devel as a component of Red Hat Enterprise Linux 10
  • kernel-64k-devel-matched as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in the Linux kernel’s SLUB memory allocator (mm/slub). The function object_err() — used for debugging object metadata (freelist pointer, redzone, etc.) — can access invalid pointers when reporting corruption, leading to a crash. In some cases, due to freelist corruption (e.g., detected by alloc_consistency_checks()), the pointer passed to object_err() is invalid; instead of accessing metadata.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2025-32902

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 21 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in object_err() object_err() reports details of an object for further debugging, such as the freelist pointer, redzone, etc. However, if the pointer is invalid, attempting to access object metadata can lead to a crash since it does not point to a valid object. One known path to the crash is when alloc_consistency_checks() determines the pointer to the allocated object is invalid because of a freelist corruption, and calls object_err() to report it. The debug code should report and handle the corruption gracefully and not crash in the process. In case the pointer is NULL or check_valid_pointer() returns false for the pointer, only print the pointer value and skip accessing metadata.

What

In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in object_err() object_err() reports details of an object for further debugging, such as the freelist pointer, redzone, etc. However, if the pointer is invalid, attempting to access object metadata can lead to a crash since it does not point to a valid object. One known path to the crash is when alloc_consistency_checks() determines the pointer to the allocated object is invalid because of a freelist corruption, and calls object_err() to report it. The debug code should report and handle the corruption gracefully and not crash in the process. In case the pointer is NULL or check_valid_pointer() returns false for the pointer, only print the pointer value and skip accessing metadata.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

In the Linux kernel, the following vulnerability has been resolved: mm/slub: avoid accessing metadata when pointer is invalid in object_err() object_err() reports details of an object for further debugging, such as the freelist pointer, redzone, etc. However, if the pointer is invalid, attempting to access object metadata can lead to a crash since it does not point to a valid object. One known path to the crash is when alloc_consistency_checks() determines the pointer to the allocated object is invalid because of a freelist corruption, and calls object_err() to report it. The debug code should report and handle the corruption gracefully and not crash in the process. In case the pointer is NULL or check_valid_pointer() returns false for the pointer, only print the pointer value and skip accessing metadata.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → NULL Pointer Dereference → disrupt the affected service
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-476 ↗

CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
Denial of serviceCWE-476
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-3595IBM QRadar SIEM: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2025-2170Linux Kernel: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen und andere nicht näher spezifizierte Angriffe durchzuführen, möglicherweise um beliebigen Code auszuführen oder eine Speicherbeschädigung zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20251008Security Bulletin 08 Oct 2025

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 08 Oct 2025, published on 8 October 2025. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1256Multiples vulnérabilités dans les produits IBM

rd?id=CVE-2022-3517 Référence CVE CVE-2024-55565 https://www.cve.org/CVERecord?id=CVE-2024-55565 Référence CVE CVE-2024-56602 https://www.cve.org/CVERecord?id=CVE-2024-56602 Référence CVE CVE-2024-57849 https://www.cve.org/CVERecord?id=CVE-2024-57849 Référence CVE CVE-2025-13465 https://www.cve.org/CVERecord?id=CVE-2025-13465 Référence CVE CVE-2025-14813 https://www.cve.org/CVERecord?id=CVE-2025-14813 Référence CVE CVE-2025-15284 https://www.cve.org/CVERecord?id=CVE-2025-15284 Référence CVE CVE-2025-27152 https://www.cve.org/CVERecord?id=CVE-2025-27152 Référence CVE CVE-2025-27789 https://www.cve.org/CVERecord?id=CVE-2025-27789 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-4330 https://www.cve.org/CVERecord?id=CVE-2025-4330 Référence CVE CVE-2025-46653 https://www.cve.org/CVERecord?id=CVE-2025-46653 Référence CVE CVE-2025-54518 https://www.cve.org/CVERecord?id=CVE-2025-54518 Référence CVE CVE-2025-58754 https://www.cve.org/CVERecord?id=CVE-2025-58754 Référence CVE CVE-2025-5889 https://www.cve.org/CVERecord?id=CVE-2025-5889 Référence CVE CVE-2025-59250 https://www.cve.org/CVERecord?id=CVE-2025-59250 Référence CVE CVE-2025-59471 https://www.cve.org/CVERecord?id=CVE-2025-59471 Référence CVE CVE-2025-62718 https://www.cve.org/CVERecord?id=CVE-

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1065Multiples vulnérabilités dans le noyau Linux de Red Hat

entation Bulletin de sécurité Red Hat RHSA-2026:55764 du 17 août 2026 https://access.redhat.com/errata/RHSA-2026:55764 Bulletin de sécurité Red Hat RHSA-2026:55765 du 17 août 2026 https://access.redhat.com/errata/RHSA-2026:55765 Bulletin de sécurité Red Hat RHSA-2026:56573 du 19 août 2026 https://access.redhat.com/errata/RHSA-2026:56573 Bulletin de sécurité Red Hat RHSA-2026:56574 du 19 août 2026 https://access.redhat.com/errata/RHSA-2026:56574 Bulletin de sécurité Red Hat RHSA-2026:57254 du 20 août 2026 https://access.redhat.com/errata/RHSA-2026:57254 Référence CVE CVE-2024-56602 https://www.cve.org/CVERecord?id=CVE-2024-56602 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-54518 https://www.cve.org/CVERecord?id=CVE-2025-54518 Référence CVE CVE-2026-17523 https://www.cve.org/CVERecord?id=CVE-2026-17523 Référence CVE CVE-2026-23110 https://www.cve.org/CVERecord?id=CVE-2026-23110 Référence CVE CVE-2026-31411 https://www.cve.org/CVERecord?id=CVE-2026-31411 Référence CVE CVE-2026-43112 https://www.cve.org/CVERecord?id=CVE-2026-43112 Référence CVE CVE-2026-43206 https://www.cve.org/CVERecord?id=CVE-2026-43206 Référence CVE CVE-2026-46120 https://www.cve.org/CVERecord?id=CVE-2026-46120 Référence CVE CVE-2026-52991 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0602Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39881 Référence CVE CVE-2025-39883 https://www.cve.org/CVERecord?id=CVE-2025-39883 Référence CVE CVE-2025-39885 https://www.cve.org/CVERecord?id=CVE-2025-39885 Référence CVE CVE-2025-39886 https://www.cve.org/CVERecord?id=CVE-2025-39886 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39899 https://www.cve.org/CVERecord?id=CVE-2025-39899 Référence CVE CVE-2025-39901 https://www.cve.org/CVERecord?id=CVE-2025-39901 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39913 https://www.cve.org/CVERecord?id=CVE-2025-39913 Référence CVE CVE-2025-39914 https://www.cve.org/CVERecord?id=CVE-2025-39914 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0421Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39883 Référence CVE CVE-2025-39885 https://www.cve.org/CVERecord?id=CVE-2025-39885 Référence CVE CVE-2025-39886 https://www.cve.org/CVERecord?id=CVE-2025-39886 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39897 https://www.cve.org/CVERecord?id=CVE-2025-39897 Référence CVE CVE-2025-39899 https://www.cve.org/CVERecord?id=CVE-2025-39899 Référence CVE CVE-2025-39901 https://www.cve.org/CVERecord?id=CVE-2025-39901 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39913 https://www.cve.org/CVERecord?id=CVE-2025-39913 Référence CVE CVE-2025-39914 https://www.cve.org/CVERecord?id=CVE-2025-39914 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0397Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39883 Référence CVE CVE-2025-39885 https://www.cve.org/CVERecord?id=CVE-2025-39885 Référence CVE CVE-2025-39886 https://www.cve.org/CVERecord?id=CVE-2025-39886 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39897 https://www.cve.org/CVERecord?id=CVE-2025-39897 Référence CVE CVE-2025-39899 https://www.cve.org/CVERecord?id=CVE-2025-39899 Référence CVE CVE-2025-39901 https://www.cve.org/CVERecord?id=CVE-2025-39901 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39913 https://www.cve.org/CVERecord?id=CVE-2025-39913 Référence CVE CVE-2025-39914 https://www.cve.org/CVERecord?id=CVE-2025-39914 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0371Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39883 Référence CVE CVE-2025-39885 https://www.cve.org/CVERecord?id=CVE-2025-39885 Référence CVE CVE-2025-39886 https://www.cve.org/CVERecord?id=CVE-2025-39886 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39897 https://www.cve.org/CVERecord?id=CVE-2025-39897 Référence CVE CVE-2025-39899 https://www.cve.org/CVERecord?id=CVE-2025-39899 Référence CVE CVE-2025-39901 https://www.cve.org/CVERecord?id=CVE-2025-39901 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39913 https://www.cve.org/CVERecord?id=CVE-2025-39913 Référence CVE CVE-2025-39914 https://www.cve.org/CVERecord?id=CVE-2025-39914 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0331Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39883 Référence CVE CVE-2025-39885 https://www.cve.org/CVERecord?id=CVE-2025-39885 Référence CVE CVE-2025-39886 https://www.cve.org/CVERecord?id=CVE-2025-39886 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39897 https://www.cve.org/CVERecord?id=CVE-2025-39897 Référence CVE CVE-2025-39899 https://www.cve.org/CVERecord?id=CVE-2025-39899 Référence CVE CVE-2025-39901 https://www.cve.org/CVERecord?id=CVE-2025-39901 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39913 https://www.cve.org/CVERecord?id=CVE-2025-39913 Référence CVE CVE-2025-39914 https://www.cve.org/CVERecord?id=CVE-2025-39914 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1135Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39847 Référence CVE CVE-2025-39848 https://www.cve.org/CVERecord?id=CVE-2025-39848 Référence CVE CVE-2025-39853 https://www.cve.org/CVERecord?id=CVE-2025-39853 Référence CVE CVE-2025-39860 https://www.cve.org/CVERecord?id=CVE-2025-39860 Référence CVE CVE-2025-39864 https://www.cve.org/CVERecord?id=CVE-2025-39864 Référence CVE CVE-2025-39865 https://www.cve.org/CVERecord?id=CVE-2025-39865 Référence CVE CVE-2025-39866 https://www.cve.org/CVERecord?id=CVE-2025-39866 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39946 https://www.cve.org/CVERecord?id=CVE-2025-39946 Référence CVE CVE-2025-39964 https://www.cve.org/CVERecord?id=CVE-2025-39964 Référence CVE CVE-2025-39993 https://www.cve.org/CVERecord?id=CVE-2025-39993 Référence CVE CVE-2025-40018 https://www.cve.org/CVERecord?id=CVE-2025-40018 Référence CVE CVE-2025-40114 https://www.cve.org/CVERecord?id=CVE-2025-40114 Référence CVE CVE-2025-40157 https://www.cve.org/CVERecord?id=CVE-2025-40157 Référence CVE CVE-2025-40172 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1073Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2025-39885 Référence CVE CVE-2025-39889 https://www.cve.org/CVERecord?id=CVE-2025-39889 Référence CVE CVE-2025-39890 https://www.cve.org/CVERecord?id=CVE-2025-39890 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39896 https://www.cve.org/CVERecord?id=CVE-2025-39896 Référence CVE CVE-2025-39898 https://www.cve.org/CVERecord?id=CVE-2025-39898 Référence CVE CVE-2025-39899 https://www.cve.org/CVERecord?id=CVE-2025-39899 Référence CVE CVE-2025-39900 https://www.cve.org/CVERecord?id=CVE-2025-39900 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39903 https://www.cve.org/CVERecord?id=CVE-2025-39903 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39918 https://www.cve.org/CVERecord?id=CVE-2025-39918 Référence CVE CVE-2025-39922 https://www.cve.org/CVERecord?id=CVE-2025-39922 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1075Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2025-39847 Référence CVE CVE-2025-39848 https://www.cve.org/CVERecord?id=CVE-2025-39848 Référence CVE CVE-2025-39853 https://www.cve.org/CVERecord?id=CVE-2025-39853 Référence CVE CVE-2025-39860 https://www.cve.org/CVERecord?id=CVE-2025-39860 Référence CVE CVE-2025-39864 https://www.cve.org/CVERecord?id=CVE-2025-39864 Référence CVE CVE-2025-39865 https://www.cve.org/CVERecord?id=CVE-2025-39865 Référence CVE CVE-2025-39866 https://www.cve.org/CVERecord?id=CVE-2025-39866 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39964 https://www.cve.org/CVERecord?id=CVE-2025-39964 Référence CVE CVE-2025-40018 https://www.cve.org/CVERecord?id=CVE-2025-40018 Référence CVE CVE-2025-40025 https://www.cve.org/CVERecord?id=CVE-2025-40025 Référence CVE CVE-2025-40026 https://www.cve.org/CVERecord?id=CVE-2025-40026 Référence CVE CVE-2025-40027 https://www.cve.org/CVERecord?id=CVE-2025-40027 Référence CVE CVE-2025-40028 https://www.cve.org/CVERecord?id=CVE-2025-40028 Référence CVE CVE-2025-40108 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1047Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2025-39813 Référence CVE CVE-2025-39828 https://www.cve.org/CVERecord?id=CVE-2025-39828 Référence CVE CVE-2025-39841 https://www.cve.org/CVERecord?id=CVE-2025-39841 Référence CVE CVE-2025-39851 https://www.cve.org/CVERecord?id=CVE-2025-39851 Référence CVE CVE-2025-39866 https://www.cve.org/CVERecord?id=CVE-2025-39866 Référence CVE CVE-2025-39876 https://www.cve.org/CVERecord?id=CVE-2025-39876 Référence CVE CVE-2025-39881 https://www.cve.org/CVERecord?id=CVE-2025-39881 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39898 https://www.cve.org/CVERecord?id=CVE-2025-39898 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=CVE-2025-39923 Référence CVE CVE-2025-39929 https://www.cve.org/CVERecord?id=CVE-2025-39929 Référence CVE CVE-2025-39931 https://www.cve.org/CVERecord?id=CVE-2025-39931 Référence CVE CVE-2025-39934 https://www.cve.org/CVERecord?id=CVE-2025-39934 Référence CVE CVE-2025-39937 https://www.cve.org/CVERecord?id=CVE-2025-39937 Référence CVE CVE-2025-39938 https://www.cve.org/CVERecord?id=CVE-2025-39938 Référence CVE CVE-2025-39945 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1032Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2025-39871 Référence CVE CVE-2025-39873 https://www.cve.org/CVERecord?id=CVE-2025-39873 Référence CVE CVE-2025-39876 https://www.cve.org/CVERecord?id=CVE-2025-39876 Référence CVE CVE-2025-39881 https://www.cve.org/CVERecord?id=CVE-2025-39881 Référence CVE CVE-2025-39882 https://www.cve.org/CVERecord?id=CVE-2025-39882 Référence CVE CVE-2025-39889 https://www.cve.org/CVERecord?id=CVE-2025-39889 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39900 https://www.cve.org/CVERecord?id=CVE-2025-39900 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=CVE-2025-39923 Référence CVE CVE-2025-39925 https://www.cve.org/CVERecord?id=CVE-2025-39925 Référence CVE CVE-2025-39931 https://www.cve.org/CVERecord?id=CVE-2025-39931 Référence CVE CVE-2025-39934 https://www.cve.org/CVERecord?id=CVE-2025-39934 Référence CVE CVE-2025-39937 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-1009Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2025-39873 Référence CVE CVE-2025-39876 https://www.cve.org/CVERecord?id=CVE-2025-39876 Référence CVE CVE-2025-39881 https://www.cve.org/CVERecord?id=CVE-2025-39881 Référence CVE CVE-2025-39882 https://www.cve.org/CVERecord?id=CVE-2025-39882 Référence CVE CVE-2025-39889 https://www.cve.org/CVERecord?id=CVE-2025-39889 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39895 https://www.cve.org/CVERecord?id=CVE-2025-39895 Référence CVE CVE-2025-39898 https://www.cve.org/CVERecord?id=CVE-2025-39898 Référence CVE CVE-2025-39900 https://www.cve.org/CVERecord?id=CVE-2025-39900 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=CVE-2025-39923 Référence CVE CVE-2025-39925 https://www.cve.org/CVERecord?id=CVE-2025-39925 Référence CVE CVE-2025-39931 https://www.cve.org/CVERecord?id=CVE-2025-39931 Référence CVE CVE-2025-39934 https://www.cve.org/CVERecord?id=CVE-2025-39934 Référence CVE CVE-2025-39937 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0894Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2025-39876 Référence CVE CVE-2025-39877 https://www.cve.org/CVERecord?id=CVE-2025-39877 Référence CVE CVE-2025-39880 https://www.cve.org/CVERecord?id=CVE-2025-39880 Référence CVE CVE-2025-39881 https://www.cve.org/CVERecord?id=CVE-2025-39881 Référence CVE CVE-2025-39883 https://www.cve.org/CVERecord?id=CVE-2025-39883 Référence CVE CVE-2025-39885 https://www.cve.org/CVERecord?id=CVE-2025-39885 Référence CVE CVE-2025-39891 https://www.cve.org/CVERecord?id=CVE-2025-39891 Référence CVE CVE-2025-39894 https://www.cve.org/CVERecord?id=CVE-2025-39894 Référence CVE CVE-2025-39898 https://www.cve.org/CVERecord?id=CVE-2025-39898 Référence CVE CVE-2025-39902 https://www.cve.org/CVERecord?id=CVE-2025-39902 Référence CVE CVE-2025-39907 https://www.cve.org/CVERecord?id=CVE-2025-39907 Référence CVE CVE-2025-39909 https://www.cve.org/CVERecord?id=CVE-2025-39909 Référence CVE CVE-2025-39911 https://www.cve.org/CVERecord?id=CVE-2025-39911 Référence CVE CVE-2025-39913 https://www.cve.org/CVERecord?id=CVE-2025-39913 Référence CVE CVE-2025-39914 https://www.cve.org/CVERecord?id=CVE-2025-39914 Référence CVE CVE-2025-39916 https://www.cve.org/CVERecord?id=CVE-2025-39916 Référence CVE CVE-2025-39920 https://www.cve.org/CVERecord?id=CVE-2025-39920 Référence CVE CVE-2025-39923 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2025-024940Debian等の複数ベンダの製品におけるNULL ポインタデリファレンスに関する脆弱性

Linuxカーネルにおいて、以下の脆弱性を修正しました。mm/slubのobject_err()関数でポインタが無効な場合にメタデータへアクセスしないようにしています。object_err()はフリーリストポインタやレッドゾーンなどのデバッグ用にオブジェクトの詳細を報告します。しかし、ポインタが無効な場合にオブジェクトメタデータにアクセスしようとすると、有効なオブジェクトを指していないためクラッシュが発生する可能性があります。既知のクラッシュ原因の一つとして、alloc_consistency_checks()がフリーリストの破損により割り当てられたオブジェクトのポインタを無効と判断し、object_err()を呼び出して報告する場合があります。デバッグコードは破損を報告し適切に処理すべきであり、処理中にクラッシュしてはなりません。ポインタがNULLの場合やcheck_valid_pointer()がfalseを返す場合は、ポインタの値のみを出力し、メタデータへのアクセスをスキップします。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 1 Oct 2025 · Last source change 5 Aug 2026, 12:05 UTC · CWE-476 · NULL Pointer Dereference

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2025-32902
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2025-39902 · cve.blacktree.nl