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Back to active CVEs
Critical · CVSS 9.8CVE-2025-38561

ksmbd: fix Preauh_HashValue race conditionCVE-2025-38561

Answer in brief

CVE-2025-38561 records a Critical severity (CVSS 9.8) vulnerability in ksmbd: fix Preauh_HashValue race condition. 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 19, 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
CWE-362
Source
CVE List V5
Source checked
Nov 4, 2026
References
8 linked sources
Open source record

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. 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/Linuxgeneric>=0626e6641f6b467447c81dd7678a69c66f7746cf <fbf5c0845ed15122a770bca9be1d9b60b470d3aa || >=0626e6641f6b467447c81dd7678a69c66f7746cf <b69fd87076daa66f3d186bd421a7b0ee0cb45829 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <edeecc7871e8fc0878d53ce286c75040a0e38f6c || >=0626e6641f6b467447c81dd7678a69c66f7746cf <7d7c0c5304c88bcbd7a85e9bcd61d27e998ba5fc || >=0626e6641f6b467447c81dd7678a69c66f7746cf <6613887da1d18dd2ecfd6c6148a873c4d903ebdc || >=0626e6641f6b467447c81dd7678a69c66f7746cf <44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6fbf5c0845ed15122a770bca9be1d9b60b470d3aa, b69fd87076daa66f3d186bd421a7b0ee0cb45829, edeecc7871e8fc0878d53ce286c75040a0e38f6c, 7d7c0c5304c88bcbd7a85e9bcd61d27e998ba5fc, 6613887da1d18dd2ecfd6c6148a873c4d903ebdc, 44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6
Linux/Linuxgeneric5.15Not 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 fbf5c0845ed15122a770bca9be1d9b60b470d3aa if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Aug 19, 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 referencelists.debian.org
  • Source referencezerodayinitiative.com
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Preauh_HashValue race condition If client send multiple session setup requests to ksmbd, Preauh_HashValue race condition could happen. There is no need to free sess->Preauh_HashValue at session setup phase. It can be freed together with session at connection termination phase.

Quoted source text, attributed separately from HOL analysis.