CVE-2025-37924 (GCVE-0-2025-37924)

Vulnerability from cvelistv5 – Published: 2025-05-20 15:21 – Updated: 2026-05-11 21:17
VLAI
Title
ksmbd: fix use-after-free in kerberos authentication
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix use-after-free in kerberos authentication Setting sess->user = NULL was introduced to fix the dangling pointer created by ksmbd_free_user. However, it is possible another thread could be operating on the session and make use of sess->user after it has been passed to ksmbd_free_user but before sess->user is set to NULL.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < e34a33d5d7e87399af0a138bb32f6a3e95dd83d2 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < b447463562238428503cfba1c913261047772f90 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < e18c616718018dfc440e4a2d2b94e28fe91b1861 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 28c756738af44a404a91b77830d017bb0c525890 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < e86e9134e1d1c90a960dd57f59ce574d27b9a124 (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.1.138 , ≤ 6.1.* (semver)
Unaffected: 6.6.90 , ≤ 6.6.* (semver)
Unaffected: 6.12.28 , ≤ 6.12.* (semver)
Unaffected: 6.14.6 , ≤ 6.14.* (semver)
Unaffected: 6.15 , ≤ * (original_commit_for_fix)
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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

Author Source Type Date Other

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.


Detection rules are retrieved from Rulezet.