CVE-2026-89794 (GCVE-0-2026-89794)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:30 – Updated: 2026-09-16 10:30
VLAI
Title
ksmbd: zero pipe read compound padding
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: zero pipe read compound padding Compound response handling extends the last response iov to an eight-byte boundary. smb2_read_pipe() allocates only the payload size, so the alignment padding can expose up to seven bytes of uninitialized kernel heap memory. Allocate the aligned size and clear the unused tail before pinning the response buffer.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d , < f188a400dd5285fec5a84548fe8dca49eee01155 (git)
Affected: e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d , < d83a9de7cecd401c3d3e00ed6371194dcd7313e4 (git)
Affected: e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d , < be15b8da4a82cf1e1f9880b2661b90770606eec1 (git)
Affected: e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d , < 73f860489e3be2245598d1819226304fc5b87291 (git)
Affected: f2283680a80571ca82d710bc6ecd8f8beac67d63 (git)
Affected: 9f297df20d93411c0b4ddad7f88ba04a7cd36e77 (git)
Affected: 5.15.145 , < 5.16 (semver)
Affected: 6.1.71 , < 6.2 (semver)
Create a notification for this product.
Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.51 , ≤ 6.18.* (semver)
Unaffected: 7.2.5 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)
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Show details on NVD website
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{
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    "dateReserved": "2026-09-11T19:38:34.766Z",
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          }
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.