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Back to active CVEs
High · CVSS 8.8CVE-2024-56626

ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_writeCVE-2024-56626

Answer in brief

CVE-2024-56626 records a High severity (CVSS 8.8) vulnerability in ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write. 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 Dec 27, 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 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 <1aea5c9470be2c7129704fb1b9562b1e3e0576f8 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <8cd7490fc0f268883e86e840cda5311257af69ca || >=0626e6641f6b467447c81dd7678a69c66f7746cf <164d3597d26d9acff5d5b8bc3208bdcca942dd6a || >=0626e6641f6b467447c81dd7678a69c66f7746cf <c5797f195c67132d061d29c57a7c6d30530686f0 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <313dab082289e460391c82d855430ec8a28ddf811aea5c9470be2c7129704fb1b9562b1e3e0576f8, 8cd7490fc0f268883e86e840cda5311257af69ca, 164d3597d26d9acff5d5b8bc3208bdcca942dd6a, c5797f195c67132d061d29c57a7c6d30530686f0, 313dab082289e460391c82d855430ec8a28ddf81
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 1aea5c9470be2c7129704fb1b9562b1e3e0576f8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Dec 27, 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 referencegit.kernel.org
  • Source referencelists.debian.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write An offset from client could be a negative value, It could allows to write data outside the bounds of the allocated buffer. Note that this issue is coming when setting 'vfs objects = streams_xattr parameter' in ksmbd.conf.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • CESNET ipfixcol2 2.7.1 before 2.9.0 Heap Buffer Overflow via TCP LZ4 DecoderAlso CWE-787

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Nov 4, 2026
References
6 linked sources
Open source record