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CVE Record

CVE-2024-57931: selinux: ignore unknown extended permissions

In the Linux kernel, the following vulnerability has been resolved: selinux: ignore unknown extended permissions When evaluating extended permissions, ignore unknown permissions instead of calling BUG(). This commit ensures that future permissions can be added without interfering with older kernels.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel SELinux issue can turn a compatibility problem into a system crash. If SELinux evaluates policy extended permissions that the running kernel does not understand, the old behavior could call BUG() instead of ignoring them. Business impact appears availability-focused, but severity is not scored in the provided sources.

Executive priority

Handle through normal kernel patch management unless SELinux-heavy or custom-policy systems are business critical. Escalate priority if vendors score it higher, if crashes are observed, or if affected kernels support high-availability services.

Technical view

The fix changes SELinux extended-permission evaluation to ignore unknown permissions rather than invoking BUG(). The stated purpose is forward compatibility when newer permissions are introduced. The bundle identifies Linux kernel as affected and links stable fixes, but provides no CVSS, CWE, attack vector, or complete distro-specific applicability.

Likely exposure

Likely exposure is Linux systems using affected kernel builds where SELinux evaluates extended permissions unknown to that kernel. Distribution kernels should be checked against vendor advisories and fixed stable commits because the provided version data is incomplete and not deployment-specific.

Exploitation context

The source bundle does not show active exploitation, and KEV is false. It also does not provide exploit prerequisites, remote reachability, or proof-of-concept details. Treat this as a potential kernel availability risk pending vendor scoring and environment validation.

Researcher notes

The core behavior is a kernel BUG() path during SELinux extended-permission evaluation. The public bundle supports a forward-compatibility and availability interpretation, but lacks CVSS, trigger conditions, and attacker-controlled path evidence. Avoid assuming remote exploitation from the provided data.

Mitigation direction

  • Update affected Linux kernels through your distribution or stable kernel channel.
  • Review Debian LTS advisories if running supported Debian LTS kernels.
  • Prioritize systems where SELinux is enabled and custom policies are deployed.
  • Track vendor guidance because the bundle names no workaround.
  • Avoid deploying policies requiring newer permissions to older kernels.

Validation and detection

  • Inventory Linux kernel versions and SELinux status across managed hosts.
  • Compare installed kernels with vendor advisories and fixed stable references.
  • Identify hosts running custom or recently updated SELinux policies.
  • Check whether Debian LTS advisories apply to deployed Debian systems.
  • Confirm patched kernels boot and SELinux policy loads normally.
Prepared
Confidence
medium
Sources
11

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2024-57931 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
1ADP providers
10Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxfa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0a, fa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0a, fa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0a, fa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0a, fa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0a, fa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0a, fa1aa143ac4a682c7f5fd52a3cf05f5a6fe44a0aunaffected
LinuxLinux4.3, 0, 5.4.289, 5.10.233, 5.15.176, 6.1.124, 6.6.70, 6.12.9, 6.13affected
Weakness

CWE details

No CWE listed

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