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Back to active CVEs
High · CVSS 7.0CVE-2025-38461

vsock: Fix transport_* TOCTOUCVE-2025-38461

Answer in brief

CVE-2025-38461 records a High severity (CVSS 7.0) vulnerability in vsock: Fix transport_* TOCTOU. 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 Jul 25, 2025Updated Aug 5, 2026Source checked Nov 4, 2026First seen by HOL Aug 5, 2026Material review Aug 5, 2026
Upstream Advisory

Record context

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

Key facts

Risk
High · CVSS 7.0
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.0. 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/Linuxgeneric>=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <8667e8d0eb46bc54fdae30ba2f4786407d3d88eb || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <36a439049b34cca0b3661276049b84a1f76cc21a || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <9ce53e744f18e73059d3124070e960f3aa9902bf || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <9d24bb6780282b0255b9929abe5e8f98007e2c6e || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <ae2c712ba39c7007de63cb0c75b51ce1caaf1da5 || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <7b73bddf54777fb62d4d8c7729d0affe6df04477 || >=c0cfa2d8a788fcf45df5bf4070ab2474c88d543a <687aa0c5581b8d4aa87fd92973e4ee576b550cdf8667e8d0eb46bc54fdae30ba2f4786407d3d88eb, 36a439049b34cca0b3661276049b84a1f76cc21a, 9ce53e744f18e73059d3124070e960f3aa9902bf, 9d24bb6780282b0255b9929abe5e8f98007e2c6e, ae2c712ba39c7007de63cb0c75b51ce1caaf1da5, 7b73bddf54777fb62d4d8c7729d0affe6df04477, 687aa0c5581b8d4aa87fd92973e4ee576b550cdf
Linux/Linuxgeneric5.5Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to 8667e8d0eb46bc54fdae30ba2f4786407d3d88eb if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 25, 2025

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

In the Linux kernel, the following vulnerability has been resolved: vsock: Fix transport_* TOCTOU Transport assignment may race with module unload. Protect new_transport from becoming a stale pointer. This also takes care of an insecure call in vsock_use_local_transport(); add a lockdep assert. BUG: unable to handle page fault for address: fffffbfff8056000 Oops: Oops: 0000 [#1] SMP KASAN RIP: 0010:vsock_assign_transport+0x366/0x600 Call Trace: vsock_connect+0x59c/0xc40 __sys_connect+0xe8/0x100 __x64_sys_connect+0x6e/0xc0 do_syscall_64+0x92/0x1c0 entry_SYSCALL_64_after_hwframe+0x4b/0x53

Quoted source text, attributed separately from HOL analysis.