CVE-2025-21994 (GCVE-0-2025-21994)

Vulnerability from cvelistv5 – Published: 2025-04-02 14:00 – Updated: 2025-11-03 19:40
VLAI?
Title
ksmbd: fix incorrect validation for num_aces field of smb_acl
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix incorrect validation for num_aces field of smb_acl parse_dcal() validate num_aces to allocate posix_ace_state_array. if (num_aces > ULONG_MAX / sizeof(struct smb_ace *)) It is an incorrect validation that we can create an array of size ULONG_MAX. smb_acl has ->size field to calculate actual number of aces in request buffer size. Use this to check invalid num_aces.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < c3a3484d9d31b27a3db0fab91fcf191132d65236 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 9c4e202abff45f8eac17989e549fc7a75095f675 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < d0f87370622a853b57e851f7d5a5452b72300f19 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < a4cb17797a5d241f1e509cb5b46ed95a80c2f5fd (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < f6a6721802ac2f12f4c1bbe839a4c229b61866f2 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 1b8b67f3c5e5169535e26efedd3e422172e2db64 (git)
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    Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.180 , ≤ 5.15.* (semver)
Unaffected: 6.1.132 , ≤ 6.1.* (semver)
Unaffected: 6.6.85 , ≤ 6.6.* (semver)
Unaffected: 6.12.21 , ≤ 6.12.* (semver)
Unaffected: 6.13.9 , ≤ 6.13.* (semver)
Unaffected: 6.14 , ≤ * (original_commit_for_fix)
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  • 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.



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