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Full vulnerability report · 2024
CVE-2021-47311High confidence

net: qcom/emac: fix UAF in emac_remove

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 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 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 0.25% 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 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.5.14.6-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.6-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.6-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcelinuxVendor fix publishedDebian records a fixed source-package version for this release.5.14.6-1Debian Security Tracker ↗Source updated 6 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-2021-47311 · CSAF 2.0 · revision 62 · interimSUSE Product Security TeamCVE-2021-47311
80 known affected

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

  • 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
  • kernel-macros as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • kernel-source as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • reiserfs-kmp-default as component of SUSE Linux Enterprise High Performance Computing 15 SP1
  • kernel-default as component of SUSE Linux Enterprise High Performance Computing 15
  • kernel-default-base as component of SUSE Linux Enterprise High Performance Computing 15
  • kernel-default-devel as component of SUSE Linux Enterprise High Performance Computing 15
  • kernel-default-man as component of SUSE Linux Enterprise High Performance Computing 15
Summary
In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
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-2021-34316

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 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: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

What

In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

Why

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

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: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.

Why

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

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 → Use After Free → 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-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: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-416
A

Official authority intelligence

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

BSI · German · WID-SEC-2024-1905IBM QRadar SIEM: Mehrere Schwachstellen

Ein entfernter, anonymer oder lokaler Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erhöhen, beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen, eine Man-in-the-Middle-Situation zu schaffen, Sicherheitsmaßnahmen zu umgehen oder eine Denial-of-Service-Situation zu schaffen.

Official advisory ↗
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-1165Multiples vulnérabilités dans les produits IBM

d?id=CVE-2021-47097 Référence CVE CVE-2021-47101 https://www.cve.org/CVERecord?id=CVE-2021-47101 Référence CVE CVE-2021-47236 https://www.cve.org/CVERecord?id=CVE-2021-47236 Référence CVE CVE-2021-47257 https://www.cve.org/CVERecord?id=CVE-2021-47257 Référence CVE CVE-2021-47284 https://www.cve.org/CVERecord?id=CVE-2021-47284 Référence CVE CVE-2021-47287 https://www.cve.org/CVERecord?id=CVE-2021-47287 Référence CVE CVE-2021-47289 https://www.cve.org/CVERecord?id=CVE-2021-47289 Référence CVE CVE-2021-47304 https://www.cve.org/CVERecord?id=CVE-2021-47304 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47321 https://www.cve.org/CVERecord?id=CVE-2021-47321 Référence CVE CVE-2021-47338 https://www.cve.org/CVERecord?id=CVE-2021-47338 Référence CVE CVE-2021-47352 https://www.cve.org/CVERecord?id=CVE-2021-47352 Référence CVE CVE-2021-47353 https://www.cve.org/CVERecord?id=CVE-2021-47353 Référence CVE CVE-2021-47356 https://www.cve.org/CVERecord?id=CVE-2021-47356 Référence CVE CVE-2021-47373 https://www.cve.org/CVERecord?id=CVE-2021-47373 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=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0903Multiples vulnérabilités dans les produits IBM

rd?id=CVE-2020-7212 Référence CVE CVE-2021-42771 https://www.cve.org/CVERecord?id=CVE-2021-42771 Référence CVE CVE-2021-45429 https://www.cve.org/CVERecord?id=CVE-2021-45429 Référence CVE CVE-2021-46909 https://www.cve.org/CVERecord?id=CVE-2021-46909 Référence CVE CVE-2021-46972 https://www.cve.org/CVERecord?id=CVE-2021-46972 Référence CVE CVE-2021-47069 https://www.cve.org/CVERecord?id=CVE-2021-47069 Référence CVE CVE-2021-47073 https://www.cve.org/CVERecord?id=CVE-2021-47073 Référence CVE CVE-2021-47236 https://www.cve.org/CVERecord?id=CVE-2021-47236 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47353 https://www.cve.org/CVERecord?id=CVE-2021-47353 Référence CVE CVE-2021-47356 https://www.cve.org/CVERecord?id=CVE-2021-47356 Référence CVE CVE-2021-47456 https://www.cve.org/CVERecord?id=CVE-2021-47456 Référence CVE CVE-2021-47495 https://www.cve.org/CVERecord?id=CVE-2021-47495 Référence CVE CVE-2022-38725 https://www.cve.org/CVERecord?id=CVE-2022-38725 Référence CVE CVE-2022-46329 https://www.cve.org/CVERecord?id=CVE-2022-46329 Référence CVE CVE-2022-48468 https://www.cve.org/CVERecord?id=CVE-2022-48468 Référence CVE CVE-2022-48624 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0741Multiples vulnérabilités dans Juniper Secure Analytics

d?id=CVE-2021-47055 Référence CVE CVE-2021-47069 https://www.cve.org/CVERecord?id=CVE-2021-47069 Référence CVE CVE-2021-47073 https://www.cve.org/CVERecord?id=CVE-2021-47073 Référence CVE CVE-2021-47118 https://www.cve.org/CVERecord?id=CVE-2021-47118 Référence CVE CVE-2021-47153 https://www.cve.org/CVERecord?id=CVE-2021-47153 Référence CVE CVE-2021-47171 https://www.cve.org/CVERecord?id=CVE-2021-47171 Référence CVE CVE-2021-47185 https://www.cve.org/CVERecord?id=CVE-2021-47185 Référence CVE CVE-2021-47236 https://www.cve.org/CVERecord?id=CVE-2021-47236 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47353 https://www.cve.org/CVERecord?id=CVE-2021-47353 Référence CVE CVE-2021-47356 https://www.cve.org/CVERecord?id=CVE-2021-47356 Référence CVE CVE-2021-47456 https://www.cve.org/CVERecord?id=CVE-2021-47456 Référence CVE CVE-2021-47495 https://www.cve.org/CVERecord?id=CVE-2021-47495 Référence CVE CVE-2022-2879 https://www.cve.org/CVERecord?id=CVE-2022-2879 Référence CVE CVE-2022-2880 https://www.cve.org/CVERecord?id=CVE-2022-2880 Référence CVE CVE-2022-3287 https://www.cve.org/CVERecord?id=CVE-2022-3287 Référence CVE CVE-2022-39253 https://www.cve.org/CVERecord?id=CVE-20

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0720Multiples vulnérabilités dans IBM QRadar SIEM

Bulletin de sécurité IBM 7166204 du 22 août 2024 https://www.ibm.com/support/pages/node/7166204 Référence CVE CVE-2020-26555 https://www.cve.org/CVERecord?id=CVE-2020-26555 Référence CVE CVE-2021-46909 https://www.cve.org/CVERecord?id=CVE-2021-46909 Référence CVE CVE-2021-46972 https://www.cve.org/CVERecord?id=CVE-2021-46972 Référence CVE CVE-2021-47069 https://www.cve.org/CVERecord?id=CVE-2021-47069 Référence CVE CVE-2021-47073 https://www.cve.org/CVERecord?id=CVE-2021-47073 Référence CVE CVE-2021-47236 https://www.cve.org/CVERecord?id=CVE-2021-47236 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47353 https://www.cve.org/CVERecord?id=CVE-2021-47353 Référence CVE CVE-2021-47356 https://www.cve.org/CVERecord?id=CVE-2021-47356 Référence CVE CVE-2021-47456 https://www.cve.org/CVERecord?id=CVE-2021-47456 Référence CVE CVE-2021-47495 https://www.cve.org/CVERecord?id=CVE-2021-47495 Référence CVE CVE-2023-43788 https://www.cve.org/CVERecord?id=CVE-2023-43788 Référence CVE CVE-2023-43789 https://www.cve.org/CVERecord?id=CVE-2023-43789 Référence CVE CVE-2023-4692 https://www.cve.org/CVERecord?id=CVE-2023-4692 Référence CVE CVE-2023-4693 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0695Multiples vulnérabilités dans le noyau Linux de Red Hat

sécurité Red Hat RHSA-2024:5266 du 13 août 2024 https://access.redhat.com/errata/RHSA-2024:5266 Bulletin de sécurité Red Hat RHSA-2024:5281 du 13 août 2024 https://access.redhat.com/errata/RHSA-2024:5281 Bulletin de sécurité Red Hat RHSA-2024:5282 du 13 août 2024 https://access.redhat.com/errata/RHSA-2024:5282 Bulletin de sécurité Red Hat RHSA-2024:5363 du 14 août 2024 https://access.redhat.com/errata/RHSA-2024:5363 Bulletin de sécurité Red Hat RHSA-2024:5364 du 14 août 2024 https://access.redhat.com/errata/RHSA-2024:5364 Bulletin de sécurité Red Hat RHSA-2024:5365 du 14 août 2024 https://access.redhat.com/errata/RHSA-2024:5365 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47385 https://www.cve.org/CVERecord?id=CVE-2021-47385 Référence CVE CVE-2021-47566 https://www.cve.org/CVERecord?id=CVE-2021-47566 Référence CVE CVE-2021-47606 https://www.cve.org/CVERecord?id=CVE-2021-47606 Référence CVE CVE-2021-47624 https://www.cve.org/CVERecord?id=CVE-2021-47624 Référence CVE CVE-2022-1011 https://www.cve.org/CVERecord?id=CVE-2022-1011 Référence CVE CVE-2022-48627 https://www.cve.org/CVERecord?id=CVE-2022-48627 Référence CVE CVE-2022-48637 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0578Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2021-47191 Référence CVE CVE-2021-47193 https://www.cve.org/CVERecord?id=CVE-2021-47193 Référence CVE CVE-2021-47247 https://www.cve.org/CVERecord?id=CVE-2021-47247 Référence CVE CVE-2021-47267 https://www.cve.org/CVERecord?id=CVE-2021-47267 Référence CVE CVE-2021-47270 https://www.cve.org/CVERecord?id=CVE-2021-47270 Référence CVE CVE-2021-47293 https://www.cve.org/CVERecord?id=CVE-2021-47293 Référence CVE CVE-2021-47294 https://www.cve.org/CVERecord?id=CVE-2021-47294 Référence CVE CVE-2021-47297 https://www.cve.org/CVERecord?id=CVE-2021-47297 Référence CVE CVE-2021-47309 https://www.cve.org/CVERecord?id=CVE-2021-47309 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47328 https://www.cve.org/CVERecord?id=CVE-2021-47328 Référence CVE CVE-2021-47354 https://www.cve.org/CVERecord?id=CVE-2021-47354 Référence CVE CVE-2021-47368 https://www.cve.org/CVERecord?id=CVE-2021-47368 Référence CVE CVE-2021-47372 https://www.cve.org/CVERecord?id=CVE-2021-47372 Référence CVE CVE-2021-47379 https://www.cve.org/CVERecord?id=CVE-2021-47379 Référence CVE CVE-2021-47383 https://www.cve.org/CVERecord?id=CVE-2021-47383 Référence CVE CVE-2021-47407 https://www.cve.org/CVERecord?id=CVE-2021-47407 Référence CVE CVE-2021-47418 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0577Multiples vulnérabilités dans le noyau Linux de Red Hat

rata/RHSA-2024:4447 Référence CVE CVE-2020-26555 https://www.cve.org/CVERecord?id=CVE-2020-26555 Référence CVE CVE-2021-46909 https://www.cve.org/CVERecord?id=CVE-2021-46909 Référence CVE CVE-2021-46972 https://www.cve.org/CVERecord?id=CVE-2021-46972 Référence CVE CVE-2021-47069 https://www.cve.org/CVERecord?id=CVE-2021-47069 Référence CVE CVE-2021-47073 https://www.cve.org/CVERecord?id=CVE-2021-47073 Référence CVE CVE-2021-47236 https://www.cve.org/CVERecord?id=CVE-2021-47236 Référence CVE CVE-2021-47293 https://www.cve.org/CVERecord?id=CVE-2021-47293 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47353 https://www.cve.org/CVERecord?id=CVE-2021-47353 Référence CVE CVE-2021-47356 https://www.cve.org/CVERecord?id=CVE-2021-47356 Référence CVE CVE-2021-47400 https://www.cve.org/CVERecord?id=CVE-2021-47400 Référence CVE CVE-2021-47456 https://www.cve.org/CVERecord?id=CVE-2021-47456 Référence CVE CVE-2021-47495 https://www.cve.org/CVERecord?id=CVE-2021-47495 Référence CVE CVE-2022-1789 https://www.cve.org/CVERecord?id=CVE-2022-1789 Référence CVE CVE-2023-5090 https://www.cve.org/CVERecord?id=CVE-2023-5090 Référence CVE CVE-2023-52434 https://www.cve.org/CVERecord?id=CVE-

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

d?id=CVE-2021-47288 Référence CVE CVE-2021-47289 https://www.cve.org/CVERecord?id=CVE-2021-47289 Référence CVE CVE-2021-47296 https://www.cve.org/CVERecord?id=CVE-2021-47296 Référence CVE CVE-2021-47301 https://www.cve.org/CVERecord?id=CVE-2021-47301 Référence CVE CVE-2021-47302 https://www.cve.org/CVERecord?id=CVE-2021-47302 Référence CVE CVE-2021-47305 https://www.cve.org/CVERecord?id=CVE-2021-47305 Référence CVE CVE-2021-47307 https://www.cve.org/CVERecord?id=CVE-2021-47307 Référence CVE CVE-2021-47308 https://www.cve.org/CVERecord?id=CVE-2021-47308 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47314 https://www.cve.org/CVERecord?id=CVE-2021-47314 Référence CVE CVE-2021-47315 https://www.cve.org/CVERecord?id=CVE-2021-47315 Référence CVE CVE-2021-47319 https://www.cve.org/CVERecord?id=CVE-2021-47319 Référence CVE CVE-2021-47320 https://www.cve.org/CVERecord?id=CVE-2021-47320 Référence CVE CVE-2021-47321 https://www.cve.org/CVERecord?id=CVE-2021-47321 Référence CVE CVE-2021-47323 https://www.cve.org/CVERecord?id=CVE-2021-47323 Référence CVE CVE-2021-47324 https://www.cve.org/CVERecord?id=CVE-2021-47324 Référence CVE CVE-2021-47329 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-2021-47288 Référence CVE CVE-2021-47289 https://www.cve.org/CVERecord?id=CVE-2021-47289 Référence CVE CVE-2021-47296 https://www.cve.org/CVERecord?id=CVE-2021-47296 Référence CVE CVE-2021-47301 https://www.cve.org/CVERecord?id=CVE-2021-47301 Référence CVE CVE-2021-47302 https://www.cve.org/CVERecord?id=CVE-2021-47302 Référence CVE CVE-2021-47305 https://www.cve.org/CVERecord?id=CVE-2021-47305 Référence CVE CVE-2021-47307 https://www.cve.org/CVERecord?id=CVE-2021-47307 Référence CVE CVE-2021-47308 https://www.cve.org/CVERecord?id=CVE-2021-47308 Référence CVE CVE-2021-47310 https://www.cve.org/CVERecord?id=CVE-2021-47310 Référence CVE CVE-2021-47311 https://www.cve.org/CVERecord?id=CVE-2021-47311 Référence CVE CVE-2021-47314 https://www.cve.org/CVERecord?id=CVE-2021-47314 Référence CVE CVE-2021-47315 https://www.cve.org/CVERecord?id=CVE-2021-47315 Référence CVE CVE-2021-47319 https://www.cve.org/CVERecord?id=CVE-2021-47319 Référence CVE CVE-2021-47320 https://www.cve.org/CVERecord?id=CVE-2021-47320 Référence CVE CVE-2021-47321 https://www.cve.org/CVERecord?id=CVE-2021-47321 Référence CVE CVE-2021-47323 https://www.cve.org/CVERecord?id=CVE-2021-47323 Référence CVE CVE-2021-47324 https://www.cve.org/CVERecord?id=CVE-2021-47324 Référence CVE CVE-2021-47329 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-021449Linux 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: < 4.9, 4.9.277 ≤ 4.9.*, 4.14.241 ≤ 4.14.*, 4.19.199 ≤ 4.19.*, 5.4.135 ≤ 5.4.*, 5.10.53 ≤ 5.10.*, 5.13.5 ≤ 5.13.*, 5.14 ≤ *
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 21 May 2024 · Last source change 11 May 2026, 13:52 UTC · CWE-416 · Use After Free

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-2021-34316
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-2021-34316↗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-2021-47311 · cve.blacktree.nl