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Back to active CVEs
High · CVSS 8.8CVE-2025-38437

ksmbd: fix potential use-after-free in oplock/lease break ackCVE-2025-38437

Answer in brief

CVE-2025-38437 records a High severity (CVSS 8.8) vulnerability in ksmbd: fix potential use-after-free in oplock/lease break ack. 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

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. 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 <e38ec88a2b42c494601b1213816d75f0b54d9bf0 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <97c355989928a5f60b228ef5266c1be67a46cdf9 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <8106adc21a2270c16abf69cd74ccd7c79c6e7acd || >=0626e6641f6b467447c81dd7678a69c66f7746cf <50f930db22365738d9387c974416f38a06e8057ee38ec88a2b42c494601b1213816d75f0b54d9bf0, 97c355989928a5f60b228ef5266c1be67a46cdf9, 815f1161d6dbc4c54ccf94b7d3fdeab34b4d7477, 8106adc21a2270c16abf69cd74ccd7c79c6e7acd, 50f930db22365738d9387c974416f38a06e8057e
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 e38ec88a2b42c494601b1213816d75f0b54d9bf0 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 referencelists.debian.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix potential use-after-free in oplock/lease break ack If ksmbd_iov_pin_rsp return error, use-after-free can happen by accessing opinfo->state and opinfo_put and ksmbd_fd_put could called twice.

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
6 linked sources
Open source record