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Full vulnerability report · 2024
CVE-2021-47378High confidence

nvme-rdma: destroy cm id before destroy qp to avoid use after free

Linux · Linux

9.8CriticalCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 1 structured product or package state 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 severityCriticalOperational priority:Critical, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 1.17% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • 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: Within 3 daysRemediation target: Within 90 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 1 structured product or package state 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.

5 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 1 affected package state 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.5.14.9-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.9-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.9-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.9-1Debian Security Tracker ↗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
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-2021-47378 · CSAF 2.0 · revision 74 · interimSUSE Product Security TeamCVE-2021-47378
128 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: nvme-rdma: destroy cm id before destroy qp to avoid use after free We should always destroy cm_id before destroy qp to avoid to get cma event after qp was destroyed, which may lead to use after free. In RDMA connection establishment error flow, don't destroy qp in cm event handler.Just report cm_error to upper level, qp will be destroy in nvme_rdma_alloc_queue() after destroy cm id.
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-2021-34383

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

Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded. Verified remediation exists for at least one product or source, but 1 structured product or package state 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: nvme-rdma: destroy cm id before destroy qp to avoid use after free We should always destroy cm_id before destroy qp to avoid to get cma event after qp was destroyed, which may lead to use after free. In RDMA connection establishment error flow, don't destroy qp in cm event handler.Just report cm_error to upper level, qp will be destroy in nvme_rdma_alloc_queue() after destroy cm id.

What

In the Linux kernel, the following vulnerability has been resolved: nvme-rdma: destroy cm id before destroy qp to avoid use after free We should always destroy cm_id before destroy qp to avoid to get cma event after qp was destroyed, which may lead to use after free. In RDMA connection establishment error flow, don't destroy qp in cm event handler.Just report cm_error to upper level, qp will be destroy in nvme_rdma_alloc_queue() after destroy cm id.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. 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: nvme-rdma: destroy cm id before destroy qp to avoid use after free We should always destroy cm_id before destroy qp to avoid to get cma event after qp was destroyed, which may lead to use after free. In RDMA connection establishment error flow, don't destroy qp in cm event handler.Just report cm_error to upper level, qp will be destroy in nvme_rdma_alloc_queue() after destroy cm id.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. 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
a network path → Use After Free → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
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-416 ↗

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/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.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing 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
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-416
A

Official authority intelligence

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

Cyber Security Agency of Singapore · English · CSA-SB-20240522Security Bulletin 22 May 2024

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 22 May 2024, published on 22 May 2024. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1203Multiples vulnérabilités dans le noyau Linux d'Ubuntu

in de sécurité Ubuntu USN-8725-2 du 18 septembre 2026 https://ubuntu.com/security/notices/USN-8725-2 Bulletin de sécurité Ubuntu USN-8726-2 du 18 septembre 2026 https://ubuntu.com/security/notices/USN-8726-2 Bulletin de sécurité Ubuntu USN-8729-2 du 18 septembre 2026 https://ubuntu.com/security/notices/USN-8729-2 Bulletin de sécurité Ubuntu USN-8730-3 du 18 septembre 2026 https://ubuntu.com/security/notices/USN-8730-3 Bulletin de sécurité Ubuntu USN-8761-2 du 18 septembre 2026 https://ubuntu.com/security/notices/USN-8761-2 Bulletin de sécurité Ubuntu USN-8781-1 du 18 septembre 2026 https://ubuntu.com/security/notices/USN-8781-1 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2022-50401 https://www.cve.org/CVERecord?id=CVE-2022-50401 Référence CVE CVE-2024-14040 https://www.cve.org/CVERecord?id=CVE-2024-14040 Référence CVE CVE-2024-35948 https://www.cve.org/CVERecord?id=CVE-2024-35948 Référence CVE CVE-2024-41008 https://www.cve.org/CVERecord?id=CVE-2024-41008 Référence CVE CVE-2024-43872 https://www.cve.org/CVERecord?id=CVE-2024-43872 Référence CVE CVE-2024-44932 https://www.cve.org/CVERecord?id=CVE-2024-44932 Référence CVE CVE-2024-44964 https://www.cve.org/CVERecord?id=CVE-2024-44964 Référence CVE CVE-2024-49932 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1117Multiples vulnérabilités dans le noyau Linux d'Ubuntu

Résumé De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur. Solutions Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Ubuntu USN-8661-4 du 02 septembre 2026 https://ubuntu.com/security/notices/USN-8661-4 Bulletin de sécurité Ubuntu USN-8714-1 du 02 septembre 2026 https://ubuntu.com/security/notices/USN-8714-1 Bulletin de sécurité Ubuntu USN-8715-1 du 02 septembre 2026 https://ubuntu.com/security/notices/USN-8715-1 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2025-27558 https://www.cve.org/CVERecord?id=CVE-2025-27558 Référence CVE CVE-2026-23392 https://www.cve.org/CVERecord?id=CVE-2026-23392 Référence CVE CVE-2026-31405 https://www.cve.org/CVERecord?id=CVE-2026-31405 Référence CVE CVE-2026-31414 https://www.cve.org/CVERecord?id=CVE-2026-31414 Référence CVE CVE-2026-31448 https://www.cve.org/CVERecord?id=CVE-2026-31448 Référence CVE CVE-2026-31657 https://www.cve.org/CVERecord?id=CVE-2026-31657 Référence CVE CVE-2026-31668 https://www.cve.org/CVERecord?id=CVE-2026-31668 Référence CVE CVE-2026-31705 https://www.cve.org/CVERecord?id=

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

rity/notices/USN-8659-4 Bulletin de sécurité Ubuntu LSN-0121-1 du 27 août 2026 https://ubuntu.com/security/notices/LSN-0121-1 Bulletin de sécurité Ubuntu USN-8643-5 du 27 août 2026 https://ubuntu.com/security/notices/USN-8643-5 Bulletin de sécurité Ubuntu USN-8644-3 du 27 août 2026 https://ubuntu.com/security/notices/USN-8644-3 Bulletin de sécurité Ubuntu USN-8658-4 du 27 août 2026 https://ubuntu.com/security/notices/USN-8658-4 Bulletin de sécurité Ubuntu USN-8661-3 du 27 août 2026 https://ubuntu.com/security/notices/USN-8661-3 Bulletin de sécurité Ubuntu USN-8666-3 du 27 août 2026 https://ubuntu.com/security/notices/USN-8666-3 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2022-49803 https://www.cve.org/CVERecord?id=CVE-2022-49803 Référence CVE CVE-2022-49961 https://www.cve.org/CVERecord?id=CVE-2022-49961 Référence CVE CVE-2022-50073 https://www.cve.org/CVERecord?id=CVE-2022-50073 Référence CVE CVE-2022-50116 https://www.cve.org/CVERecord?id=CVE-2022-50116 Référence CVE CVE-2022-50552 https://www.cve.org/CVERecord?id=CVE-2022-50552 Référence CVE CVE-2023-45896 https://www.cve.org/CVERecord?id=CVE-2023-45896 Référence CVE CVE-2023-52682 https://www.cve.org/CVERecord?id=CVE-2023-52682 Référence CVE CVE-2023-52737 https://www.cve.org/CVERecord?id=

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

6 https://ubuntu.com/security/notices/USN-8661-1 Bulletin de sécurité Ubuntu USN-8662-1 du 20 août 2026 https://ubuntu.com/security/notices/USN-8662-1 Bulletin de sécurité Ubuntu USN-8663-1 du 20 août 2026 https://ubuntu.com/security/notices/USN-8663-1 Bulletin de sécurité Ubuntu USN-8664-1 du 20 août 2026 https://ubuntu.com/security/notices/USN-8664-1 Bulletin de sécurité Ubuntu USN-8665-1 du 20 août 2026 https://ubuntu.com/security/notices/USN-8665-1 Bulletin de sécurité Ubuntu USN-8666-1 du 20 août 2026 https://ubuntu.com/security/notices/USN-8666-1 Référence CVE CVE-2021-47354 https://www.cve.org/CVERecord?id=CVE-2021-47354 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2024-38612 https://www.cve.org/CVERecord?id=CVE-2024-38612 Référence CVE CVE-2025-21709 https://www.cve.org/CVERecord?id=CVE-2025-21709 Référence CVE CVE-2025-22116 https://www.cve.org/CVERecord?id=CVE-2025-22116 Référence CVE CVE-2025-27558 https://www.cve.org/CVERecord?id=CVE-2025-27558 Référence CVE CVE-2025-38426 https://www.cve.org/CVERecord?id=CVE-2025-38426 Référence CVE CVE-2025-39764 https://www.cve.org/CVERecord?id=CVE-2025-39764 Référence CVE CVE-2025-40135 https://www.cve.org/CVERecord?id=CVE-2025-40135 Référence CVE CVE-2025-40150 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1027Multiples vulnérabilités dans le noyau Linux d'Ubuntu

letin de sécurité Ubuntu USN-8631-2 du 13 août 2026 https://ubuntu.com/security/notices/USN-8631-2 Bulletin de sécurité Ubuntu USN-8631-3 du 13 août 2026 https://ubuntu.com/security/notices/USN-8631-3 Bulletin de sécurité Ubuntu USN-8633-2 du 13 août 2026 https://ubuntu.com/security/notices/USN-8633-2 Bulletin de sécurité Ubuntu USN-8637-1 du 13 août 2026 https://ubuntu.com/security/notices/USN-8637-1 Référence CVE CVE-2021-47117 https://www.cve.org/CVERecord?id=CVE-2021-47117 Référence CVE CVE-2021-47202 https://www.cve.org/CVERecord?id=CVE-2021-47202 Référence CVE CVE-2021-47354 https://www.cve.org/CVERecord?id=CVE-2021-47354 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2023-52646 https://www.cve.org/CVERecord?id=CVE-2023-52646 Référence CVE CVE-2024-38612 https://www.cve.org/CVERecord?id=CVE-2024-38612 Référence CVE CVE-2024-56643 https://www.cve.org/CVERecord?id=CVE-2024-56643 Référence CVE CVE-2025-27558 https://www.cve.org/CVERecord?id=CVE-2025-27558 Référence CVE CVE-2026-23272 https://www.cve.org/CVERecord?id=CVE-2026-23272 Référence CVE CVE-2026-23455 https://www.cve.org/CVERecord?id=CVE-2026-23455 Référence CVE CVE-2026-31402 https://www.cve.org/CVERecord?id=CVE-2026-31402 Référence CVE CVE-2026-31405 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0088Multiples vulnérabilités dans le noyau Linux de SUSE

ord?id=CVE-2021-34556 Référence CVE CVE-2021-35477 https://www.cve.org/CVERecord?id=CVE-2021-35477 Référence CVE CVE-2021-38160 https://www.cve.org/CVERecord?id=CVE-2021-38160 Référence CVE CVE-2021-4148 https://www.cve.org/CVERecord?id=CVE-2021-4148 Référence CVE CVE-2021-42327 https://www.cve.org/CVERecord?id=CVE-2021-42327 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47202 https://www.cve.org/CVERecord?id=CVE-2021-47202 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47365 https://www.cve.org/CVERecord?id=CVE-2021-47365 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47489 https://www.cve.org/CVERecord?id=CVE-2021-47489 Référence CVE CVE-2021-47491 https://www.cve.org/CVERecord?id=CVE-2021-47491 Référence CVE CVE-2021-47492 https://www.cve.org/CVERecord?id=CVE-2021-47492 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2022-36280 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0047Multiples vulnérabilités dans le noyau Linux de SUSE

://www.suse.com/support/update/announcement/2025/suse-su-20250137-1 Bulletin de sécurité SUSE SUSE-SU-2025:0138-1 du 16 janvier 2025 https://www.suse.com/support/update/announcement/2025/suse-su-20250138-1 Bulletin de sécurité SUSE SUSE-SU-2025:0146-1 du 16 janvier 2025 https://www.suse.com/support/update/announcement/2025/suse-su-20250146-1 Bulletin de sécurité SUSE SUSE-SU-2025:0150-1 du 16 janvier 2025 https://www.suse.com/support/update/announcement/2025/suse-su-20250150-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2022-48686 https://www.cve.org/CVERecord?id=CVE-2022-48686 Référence CVE CVE-2022-48956 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-1079Multiples vulnérabilités dans le noyau Linux de SUSE

www.suse.com/support/update/announcement/2024/suse-su-20244266-1 Bulletin de sécurité SUSE SUSE-SU-2024:4268-1 du 09 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244268-1 Bulletin de sécurité SUSE SUSE-SU-2024:4275-1 du 10 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244275-1 Bulletin de sécurité SUSE SUSE-SU-2024:4276-1 du 10 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244276-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47600 https://www.cve.org/CVERecord?id=CVE-2021-47600 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=C

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-1048Multiples vulnérabilités dans le noyau Linux de SUSE

sécurité SUSE SUSE-SU-2024:4219-1 du 05 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244219-1 Bulletin de sécurité SUSE SUSE-SU-2024:4220-1 du 05 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244220-1 Bulletin de sécurité SUSE SUSE-SU-2024:4221-1 du 05 décembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20244221-1 Référence CVE CVE-2021-46936 https://www.cve.org/CVERecord?id=CVE-2021-46936 Référence CVE CVE-2021-47163 https://www.cve.org/CVERecord?id=CVE-2021-47163 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47416 https://www.cve.org/CVERecord?id=CVE-2021-47416 Référence CVE CVE-2021-47517 https://www.cve.org/CVERecord?id=CVE-2021-47517 Référence CVE CVE-2021-47534 https://www.cve.org/CVERecord?id=CVE-2021-47534 Référence CVE CVE-2021-47589 https://www.cve.org/CVERecord?id=CVE-2021-47589 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47612 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0955Multiples vulnérabilités dans le noyau Linux de SUSE

-1 Bulletin de sécurité SUSE SUSE-SU-2024:3881-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243881-1 Bulletin de sécurité SUSE SUSE-SU-2024:3882-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243882-1 Bulletin de sécurité SUSE SUSE-SU-2024:3884-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243884-1 Bulletin de sécurité SUSE SUSE-SU-2024:3885-1 du 04 novembre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243885-1 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47600 https://www.cve.org/CVERecord?id=CVE-2021-47600 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0938Multiples vulnérabilités dans le noyau Linux de SUSE

://www.suse.com/support/update/announcement/2024/suse-su-20243837-1 Bulletin de sécurité SUSE SUSE-SU-2024:3840-1 du 30 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243840-1 Bulletin de sécurité SUSE SUSE-SU-2024:3838-1 du 31 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243838-1 Bulletin de sécurité SUSE SUSE-SU-2024:3842-1 du 31 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243842-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2021-47598 https://www.cve.org/CVERecord?id=CVE-2021-47598 Référence CVE CVE-2021-47600 https://www.cve.org/CVERecord?id=CVE-2021-47600 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0926Multiples vulnérabilités dans le noyau Linux de SUSE

://www.suse.com/support/update/announcement/2024/suse-su-20243640-1 Bulletin de sécurité SUSE SUSE-SU-2024:3641-1 du 15 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243641-1 Bulletin de sécurité SUSE SUSE-SU-2024:3642-1 du 15 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243642-1 Bulletin de sécurité SUSE SUSE-SU-2024:3643-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243643-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CVE-2023-52340 Référence CVE CVE-2023-52502 https://www.cve.org/CVERecord?id=CVE-2023-52502 Référence CVE CVE-2023-52846 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0907Multiples vulnérabilités dans le noyau Linux de SUSE

://www.suse.com/support/update/announcement/2024/suse-su-20243706-1 Bulletin de sécurité SUSE SUSE-SU-2024:3707-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243707-1 Bulletin de sécurité SUSE SUSE-SU-2024:3708-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243708-1 Bulletin de sécurité SUSE SUSE-SU-2024:3710-1 du 16 octobre 2024 https://www.suse.com/support/update/announcement/2024/suse-su-20243710-1 Référence CVE CVE-2021-46955 https://www.cve.org/CVERecord?id=CVE-2021-46955 Référence CVE CVE-2021-47291 https://www.cve.org/CVERecord?id=CVE-2021-47291 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47402 https://www.cve.org/CVERecord?id=CVE-2021-47402 Référence CVE CVE-2022-48651 https://www.cve.org/CVERecord?id=CVE-2022-48651 Référence CVE CVE-2022-48662 https://www.cve.org/CVERecord?id=CVE-2022-48662 Référence CVE CVE-2023-1829 https://www.cve.org/CVERecord?id=CVE-2023-1829 Référence CVE CVE-2023-52340 https://www.cve.org/CVERecord?id=CVE-2023-52340 Référence CVE CVE-2023-52502 https://www.cve.org/CVERecord?id=CVE-2023-52502 Référence CVE CVE-2023-52846 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0729Multiples vulnérabilités dans le noyau Linux de SUSE

De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à la confidentialité des données et un contournement de la politique de sécurité.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0526Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47368 Référence CVE CVE-2021-47369 https://www.cve.org/CVERecord?id=CVE-2021-47369 Référence CVE CVE-2021-47370 https://www.cve.org/CVERecord?id=CVE-2021-47370 Référence CVE CVE-2021-47371 https://www.cve.org/CVERecord?id=CVE-2021-47371 Référence CVE CVE-2021-47372 https://www.cve.org/CVERecord?id=CVE-2021-47372 Référence CVE CVE-2021-47373 https://www.cve.org/CVERecord?id=CVE-2021-47373 Référence CVE CVE-2021-47374 https://www.cve.org/CVERecord?id=CVE-2021-47374 Référence CVE CVE-2021-47375 https://www.cve.org/CVERecord?id=CVE-2021-47375 Référence CVE CVE-2021-47376 https://www.cve.org/CVERecord?id=CVE-2021-47376 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47379 https://www.cve.org/CVERecord?id=CVE-2021-47379 Référence CVE CVE-2021-47380 https://www.cve.org/CVERecord?id=CVE-2021-47380 Référence CVE CVE-2021-47381 https://www.cve.org/CVERecord?id=CVE-2021-47381 Référence CVE CVE-2021-47382 https://www.cve.org/CVERecord?id=CVE-2021-47382 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47384 https://www.cve.org/CVERecord?id=CVE-2021-47384 Référence CVE CVE-2021-47385 https://www.cve.org/CVERecord?id=CVE-2021-47385 Référence CVE CVE-2021-47386 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0496Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47368 Référence CVE CVE-2021-47369 https://www.cve.org/CVERecord?id=CVE-2021-47369 Référence CVE CVE-2021-47370 https://www.cve.org/CVERecord?id=CVE-2021-47370 Référence CVE CVE-2021-47371 https://www.cve.org/CVERecord?id=CVE-2021-47371 Référence CVE CVE-2021-47372 https://www.cve.org/CVERecord?id=CVE-2021-47372 Référence CVE CVE-2021-47373 https://www.cve.org/CVERecord?id=CVE-2021-47373 Référence CVE CVE-2021-47374 https://www.cve.org/CVERecord?id=CVE-2021-47374 Référence CVE CVE-2021-47375 https://www.cve.org/CVERecord?id=CVE-2021-47375 Référence CVE CVE-2021-47376 https://www.cve.org/CVERecord?id=CVE-2021-47376 Référence CVE CVE-2021-47378 https://www.cve.org/CVERecord?id=CVE-2021-47378 Référence CVE CVE-2021-47379 https://www.cve.org/CVERecord?id=CVE-2021-47379 Référence CVE CVE-2021-47380 https://www.cve.org/CVERecord?id=CVE-2021-47380 Référence CVE CVE-2021-47381 https://www.cve.org/CVERecord?id=CVE-2021-47381 Référence CVE CVE-2021-47382 https://www.cve.org/CVERecord?id=CVE-2021-47382 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47384 https://www.cve.org/CVERecord?id=CVE-2021-47384 Référence CVE CVE-2021-47385 https://www.cve.org/CVERecord?id=CVE-2021-47385 Référence CVE CVE-2021-47386 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-021782Linux の Linux Kernel における解放済みメモリの使用に関する脆弱性

Linux の Linux Kernel には、解放済みメモリの使用に関する脆弱性が存在します。

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
Linux: < 4.8, 5.10.70 ≤ 5.10.*, 5.14.9 ≤ 5.14.*, 5.15 ≤ *
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. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 21 May 2024 · Last source change 5 Aug 2026, 08:47 UTC · CWE-416 · Use After Free

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-2021-34383
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceCISA ADP
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-2021-34383↗Vendor CSAF · SUSE Product Security Team↗CVE authority or vendor 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-2021-47378 · cve.blacktree.nl