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Back to active CVEs
High · CVSS 7.8CVE-2024-42250

cachefiles: add missing lock protection when pollingCVE-2024-42250

Answer in brief

CVE-2024-42250 records a High severity (CVSS 7.8) vulnerability in cachefiles: add missing lock protection when polling. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 7, 2024Updated Aug 5, 2026Source checked Nov 4, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric6.8Not reported
Linux/Linuxgeneric>=0e19a18f998dcabe8be590e0b39660a1f230209b <97cfd5e20ddc2e33e16ce369626ce76c9a475fd7 || >=18943864342705fa18dd4e6b8d608491fec81f6e <6bb6bd3dd6f382dfd36220d4b210a0c77c066651 || >=b817e22b2e91257ace32a6768c3c003faeaa1c5c <8eadcab7f3dd809edbe5ae20533ff843dfea3a07 || >=b817e22b2e91257ace32a6768c3c003faeaa1c5c <cf5bb09e742a9cf6349127e868329a8f69b7a01497cfd5e20ddc2e33e16ce369626ce76c9a475fd7, 6bb6bd3dd6f382dfd36220d4b210a0c77c066651, 8eadcab7f3dd809edbe5ae20533ff843dfea3a07, cf5bb09e742a9cf6349127e868329a8f69b7a014

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 97cfd5e20ddc2e33e16ce369626ce76c9a475fd7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 7, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Aug 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 5, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencelists.debian.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: cachefiles: add missing lock protection when polling Add missing lock protection in poll routine when iterating xarray, otherwise: Even with RCU read lock held, only the slot of the radix tree is ensured to be pinned there, while the data structure (e.g. struct cachefiles_req) stored in the slot has no such guarantee. The poll routine will iterate the radix tree and dereference cachefiles_req accordingly. Thus RCU read lock is not adequate in this case and spinlock is needed here.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Nov 4, 2026
References
5 linked sources
Open source record