BlackTreeCVE Intelligence
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Full vulnerability report · 2026
CVE-2026-43020High confidence

Bluetooth: MGMT: validate LTK enc_size on load

Linux · Linux

7.8HighCVSS 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 20 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 11 May 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.18% 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 20 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.

24 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 20 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.6.12.85-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.1.170-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.19.12-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.6.19.12-1Debian 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-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-2026-43020 · CSAF 2.0 · revision 11 · interimSUSE Product Security TeamCVE-2026-43020
262 known affected

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

  • kernel-default as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-default-base as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-default-man as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-devel as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-macros as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-source as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • kernel-default as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • kernel-default-base as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • kernel-default-man as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • kernel-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP1
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
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-2026-26619

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 20 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: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.

What

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operations when replying to LE LTK requests. An enc_size larger than the 16-byte key buffer can therefore overflow the reply stack buffer. Reject oversized enc_size values while validating the management LTK record so invalid keys never reach the stored key state.

Why

A bounds error lets data be written beyond the intended memory region, potentially corrupting control data.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

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 → Out-of-bounds Write → cause the confidentiality, integrity or availability impact described by the vendor
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-787 ↗

CWE-787: Out-of-bounds Write. The product writes data past the end, or before the beginning, of the intended buffer.

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:H/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.IHighIntegrity impact: A successful attack can cause a major loss.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.
CWE-787
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-1346Linux Kernel: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Root-Rechte zu erlangen, um Sicherheitsmechanismen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen oder Auswirkungen unbestimmter Art zu erzielen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20260506Security Bulletin 06 May 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 06 May 2026, published on 6 May 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1229Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-31763 Référence CVE CVE-2026-31770 https://www.cve.org/CVERecord?id=CVE-2026-31770 Référence CVE CVE-2026-31773 https://www.cve.org/CVERecord?id=CVE-2026-31773 Référence CVE CVE-2026-31778 https://www.cve.org/CVERecord?id=CVE-2026-31778 Référence CVE CVE-2026-31780 https://www.cve.org/CVERecord?id=CVE-2026-31780 Référence CVE CVE-2026-31781 https://www.cve.org/CVERecord?id=CVE-2026-31781 Référence CVE CVE-2026-31788 https://www.cve.org/CVERecord?id=CVE-2026-31788 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=CVE-2026-43032 Référence CVE CVE-2026-43035 https://www.cve.org/CVERecord?id=CVE-2026-43035 Référence CVE CVE-2026-43040 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1093Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-31770 Référence CVE CVE-2026-31773 https://www.cve.org/CVERecord?id=CVE-2026-31773 Référence CVE CVE-2026-31778 https://www.cve.org/CVERecord?id=CVE-2026-31778 Référence CVE CVE-2026-31780 https://www.cve.org/CVERecord?id=CVE-2026-31780 Référence CVE CVE-2026-31781 https://www.cve.org/CVERecord?id=CVE-2026-31781 Référence CVE CVE-2026-31788 https://www.cve.org/CVERecord?id=CVE-2026-31788 Référence CVE CVE-2026-43011 https://www.cve.org/CVERecord?id=CVE-2026-43011 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=CVE-2026-43032 Référence CVE CVE-2026-43035 https://www.cve.org/CVERecord?id=CVE-2026-43035 Référence CVE CVE-2026-43037 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1066Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-43007 Référence CVE CVE-2026-43012 https://www.cve.org/CVERecord?id=CVE-2026-43012 Référence CVE CVE-2026-43013 https://www.cve.org/CVERecord?id=CVE-2026-43013 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43016 https://www.cve.org/CVERecord?id=CVE-2026-43016 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43019 https://www.cve.org/CVERecord?id=CVE-2026-43019 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43023 https://www.cve.org/CVERecord?id=CVE-2026-43023 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43025 https://www.cve.org/CVERecord?id=CVE-2026-43025 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1064Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-31778 Référence CVE CVE-2026-31779 https://www.cve.org/CVERecord?id=CVE-2026-31779 Référence CVE CVE-2026-31780 https://www.cve.org/CVERecord?id=CVE-2026-31780 Référence CVE CVE-2026-31781 https://www.cve.org/CVERecord?id=CVE-2026-31781 Référence CVE CVE-2026-43007 https://www.cve.org/CVERecord?id=CVE-2026-43007 Référence CVE CVE-2026-43011 https://www.cve.org/CVERecord?id=CVE-2026-43011 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43019 https://www.cve.org/CVERecord?id=CVE-2026-43019 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43023 https://www.cve.org/CVERecord?id=CVE-2026-43023 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=CVE-2026-43032 Référence CVE CVE-2026-43033 https://www.cve.org/CVERecord?id=CVE-2026-43033 Référence CVE CVE-2026-43038 https://www.cve.org/CVERecord?id=CVE-2026-43038 Référence CVE CVE-2026-43043 https://www.cve.org/CVERecord?id=CVE-2026-43043 Référence CVE CVE-2026-43044 https://www.cve.org/CVERecord?id=CVE-2026-43044 Référence CVE CVE-2026-43046 https://www.cve.org/CVERecord?id=CVE-2026-43046 Référence CVE CVE-2026-43047 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0986Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-42498 Référence CVE CVE-2026-42580 https://www.cve.org/CVERecord?id=CVE-2026-42580 Référence CVE CVE-2026-42581 https://www.cve.org/CVERecord?id=CVE-2026-42581 Référence CVE CVE-2026-42583 https://www.cve.org/CVERecord?id=CVE-2026-42583 Référence CVE CVE-2026-42584 https://www.cve.org/CVERecord?id=CVE-2026-42584 Référence CVE CVE-2026-42585 https://www.cve.org/CVERecord?id=CVE-2026-42585 Référence CVE CVE-2026-42587 https://www.cve.org/CVERecord?id=CVE-2026-42587 Référence CVE CVE-2026-42944 https://www.cve.org/CVERecord?id=CVE-2026-42944 Référence CVE CVE-2026-42959 https://www.cve.org/CVERecord?id=CVE-2026-42959 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43037 https://www.cve.org/CVERecord?id=CVE-2026-43037 Référence CVE CVE-2026-43038 https://www.cve.org/CVERecord?id=CVE-2026-43038 Référence CVE CVE-2026-43051 https://www.cve.org/CVERecord?id=CVE-2026-43051 Référence CVE CVE-2026-43110 https://www.cve.org/CVERecord?id=CVE-2026-43110 Référence CVE CVE-2026-43125 https://www.cve.org/CVERecord?id=CVE-2026-43125 Référence CVE CVE-2026-43158 https://www.cve.org/CVERecord?id=CVE-2026-43158 Référence CVE CVE-2026-43163 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0985Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-31763 Référence CVE CVE-2026-31770 https://www.cve.org/CVERecord?id=CVE-2026-31770 Référence CVE CVE-2026-31773 https://www.cve.org/CVERecord?id=CVE-2026-31773 Référence CVE CVE-2026-31778 https://www.cve.org/CVERecord?id=CVE-2026-31778 Référence CVE CVE-2026-31780 https://www.cve.org/CVERecord?id=CVE-2026-31780 Référence CVE CVE-2026-31781 https://www.cve.org/CVERecord?id=CVE-2026-31781 Référence CVE CVE-2026-31788 https://www.cve.org/CVERecord?id=CVE-2026-31788 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=CVE-2026-43032 Référence CVE CVE-2026-43035 https://www.cve.org/CVERecord?id=CVE-2026-43035 Référence CVE CVE-2026-43040 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0954Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-43011 Référence CVE CVE-2026-43012 https://www.cve.org/CVERecord?id=CVE-2026-43012 Référence CVE CVE-2026-43013 https://www.cve.org/CVERecord?id=CVE-2026-43013 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43016 https://www.cve.org/CVERecord?id=CVE-2026-43016 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43019 https://www.cve.org/CVERecord?id=CVE-2026-43019 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43023 https://www.cve.org/CVERecord?id=CVE-2026-43023 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43025 https://www.cve.org/CVERecord?id=CVE-2026-43025 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0927Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-43007 Référence CVE CVE-2026-43010 https://www.cve.org/CVERecord?id=CVE-2026-43010 Référence CVE CVE-2026-43011 https://www.cve.org/CVERecord?id=CVE-2026-43011 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43016 https://www.cve.org/CVERecord?id=CVE-2026-43016 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43019 https://www.cve.org/CVERecord?id=CVE-2026-43019 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43022 https://www.cve.org/CVERecord?id=CVE-2026-43022 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43025 https://www.cve.org/CVERecord?id=CVE-2026-43025 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=CVE-2026-43032 Référence CVE CVE-2026-43034 https://www.cve.org/CVERecord?id=CVE-2026-43034 Référence CVE CVE-2026-43035 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0926Multiples vulnérabilités dans le noyau Linux d'Ubuntu

d?id=CVE-2026-43011 Référence CVE CVE-2026-43012 https://www.cve.org/CVERecord?id=CVE-2026-43012 Référence CVE CVE-2026-43013 https://www.cve.org/CVERecord?id=CVE-2026-43013 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43016 https://www.cve.org/CVERecord?id=CVE-2026-43016 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43019 https://www.cve.org/CVERecord?id=CVE-2026-43019 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43023 https://www.cve.org/CVERecord?id=CVE-2026-43023 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43025 https://www.cve.org/CVERecord?id=CVE-2026-43025 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0782Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2026-31774 Référence CVE CVE-2026-31778 https://www.cve.org/CVERecord?id=CVE-2026-31778 Référence CVE CVE-2026-34180 https://www.cve.org/CVERecord?id=CVE-2026-34180 Référence CVE CVE-2026-34182 https://www.cve.org/CVERecord?id=CVE-2026-34182 Référence CVE CVE-2026-42766 https://www.cve.org/CVERecord?id=CVE-2026-42766 Référence CVE CVE-2026-42770 https://www.cve.org/CVERecord?id=CVE-2026-42770 Référence CVE CVE-2026-43009 https://www.cve.org/CVERecord?id=CVE-2026-43009 Référence CVE CVE-2026-43012 https://www.cve.org/CVERecord?id=CVE-2026-43012 Référence CVE CVE-2026-43013 https://www.cve.org/CVERecord?id=CVE-2026-43013 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43037 https://www.cve.org/CVERecord?id=CVE-2026-43037 Référence CVE CVE-2026-43038 https://www.cve.org/CVERecord?id=CVE-2026-43038 Référence CVE CVE-2026-43040 https://www.cve.org/CVERecord?id=CVE-2026-43040 Référence CVE CVE-2026-43052 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0696Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-31778 Référence CVE CVE-2026-31780 https://www.cve.org/CVERecord?id=CVE-2026-31780 Référence CVE CVE-2026-31781 https://www.cve.org/CVERecord?id=CVE-2026-31781 Référence CVE CVE-2026-31786 https://www.cve.org/CVERecord?id=CVE-2026-31786 Référence CVE CVE-2026-31787 https://www.cve.org/CVERecord?id=CVE-2026-31787 Référence CVE CVE-2026-31788 https://www.cve.org/CVERecord?id=CVE-2026-31788 Référence CVE CVE-2026-43011 https://www.cve.org/CVERecord?id=CVE-2026-43011 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=CVE-2026-43032 Référence CVE CVE-2026-43035 https://www.cve.org/CVERecord?id=CVE-2026-43035 Référence CVE CVE-2026-43037 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0665Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2026-23243 Référence CVE CVE-2026-23270 https://www.cve.org/CVERecord?id=CVE-2026-23270 Référence CVE CVE-2026-23455 https://www.cve.org/CVERecord?id=CVE-2026-23455 Référence CVE CVE-2026-31408 https://www.cve.org/CVERecord?id=CVE-2026-31408 Référence CVE CVE-2026-31419 https://www.cve.org/CVERecord?id=CVE-2026-31419 Référence CVE CVE-2026-31532 https://www.cve.org/CVERecord?id=CVE-2026-31532 Référence CVE CVE-2026-31684 https://www.cve.org/CVERecord?id=CVE-2026-31684 Référence CVE CVE-2026-31685 https://www.cve.org/CVERecord?id=CVE-2026-31685 Référence CVE CVE-2026-31709 https://www.cve.org/CVERecord?id=CVE-2026-31709 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43051 https://www.cve.org/CVERecord?id=CVE-2026-43051 Référence CVE CVE-2026-43158 https://www.cve.org/CVERecord?id=CVE-2026-43158 Référence CVE CVE-2026-43163 https://www.cve.org/CVERecord?id=CVE-2026-43163 Référence CVE CVE-2026-43190 https://www.cve.org/CVERecord?id=CVE-2026-43190 Gestion détaillée du document le 29 mai 2026 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0547Multiples vulnérabilités dans le noyau Linux de Debian LTS

d?id=CVE-2026-31786 Référence CVE CVE-2026-31787 https://www.cve.org/CVERecord?id=CVE-2026-31787 Référence CVE CVE-2026-31788 https://www.cve.org/CVERecord?id=CVE-2026-31788 Référence CVE CVE-2026-43011 https://www.cve.org/CVERecord?id=CVE-2026-43011 Référence CVE CVE-2026-43013 https://www.cve.org/CVERecord?id=CVE-2026-43013 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43023 https://www.cve.org/CVERecord?id=CVE-2026-43023 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43025 https://www.cve.org/CVERecord?id=CVE-2026-43025 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0548Multiples vulnérabilités dans le noyau Linux de Debian

d?id=CVE-2026-31786 Référence CVE CVE-2026-31787 https://www.cve.org/CVERecord?id=CVE-2026-31787 Référence CVE CVE-2026-31788 https://www.cve.org/CVERecord?id=CVE-2026-31788 Référence CVE CVE-2026-43011 https://www.cve.org/CVERecord?id=CVE-2026-43011 Référence CVE CVE-2026-43013 https://www.cve.org/CVERecord?id=CVE-2026-43013 Référence CVE CVE-2026-43014 https://www.cve.org/CVERecord?id=CVE-2026-43014 Référence CVE CVE-2026-43015 https://www.cve.org/CVERecord?id=CVE-2026-43015 Référence CVE CVE-2026-43017 https://www.cve.org/CVERecord?id=CVE-2026-43017 Référence CVE CVE-2026-43018 https://www.cve.org/CVERecord?id=CVE-2026-43018 Référence CVE CVE-2026-43020 https://www.cve.org/CVERecord?id=CVE-2026-43020 Référence CVE CVE-2026-43023 https://www.cve.org/CVERecord?id=CVE-2026-43023 Référence CVE CVE-2026-43024 https://www.cve.org/CVERecord?id=CVE-2026-43024 Référence CVE CVE-2026-43025 https://www.cve.org/CVERecord?id=CVE-2026-43025 Référence CVE CVE-2026-43026 https://www.cve.org/CVERecord?id=CVE-2026-43026 Référence CVE CVE-2026-43027 https://www.cve.org/CVERecord?id=CVE-2026-43027 Référence CVE CVE-2026-43028 https://www.cve.org/CVERecord?id=CVE-2026-43028 Référence CVE CVE-2026-43030 https://www.cve.org/CVERecord?id=CVE-2026-43030 Référence CVE CVE-2026-43032 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-014995LinuxのLinux Kernelにおける境界外書き込みに関する脆弱性

Linuxカーネルにおいて、以下の脆弱性が修正されました。BluetoothのMGMTにおいて、LTKのenc_sizeをロード時に検証します。Long Term Keysのロードでは、ユーザーが提供したenc_sizeを保存し、その後LE LTKリクエストに応答する際の固定サイズスタック操作のサイズ決定に使用します。16バイトのキー用バッファより大きいenc_sizeは返信スタックバッファをオーバーフローさせる可能性があります。マネジメントLTKレコードを検証する際に過大なenc_size値を拒否し、不正なキーが保存されたキー状態に到達しないように対策を講じています。

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
Linux: < 3.4, 5.10.253 ≤ 5.10.*, 5.15.203 ≤ 5.15.*, 6.1.168 ≤ 6.1.*, 6.6.134 ≤ 6.6.*, 6.12.81 ≤ 6.12.*, 6.18.22 ≤ 6.18.*, 6.19.12 ≤ 6.19.*, 7.0 ≤ *
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 May 2026 · Last source change 11 May 2026, 22:16 UTC · CWE-787 · Out-of-bounds Write

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
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-2026-26619
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceNIST NVD
NVD statusNVD enriched

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
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-26619↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2026-43020 · cve.blacktree.nl