CVE-2025-37778 (GCVE-0-2025-37778)

Vulnerability from cvelistv5 – Published: 2025-05-01 13:07 – Updated: 2026-05-11 21:14
VLAI
Title
ksmbd: Fix dangling pointer in krb_authenticate
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix dangling pointer in krb_authenticate krb_authenticate frees sess->user and does not set the pointer to NULL. It calls ksmbd_krb5_authenticate to reinitialise sess->user but that function may return without doing so. If that happens then smb2_sess_setup, which calls krb_authenticate, will be accessing free'd memory when it later uses sess->user.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < b61f04d5d73c53d183019bafe22fb700a739bac5 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < d5b554bc8d554ed6ddf443d3db2fad9f665cec10 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 1db2451de23e98bc864c6a6e52aa0d82c91cb325 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 6e30c0e10210c714f3d4453dc258d4abcc70364e (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < e83e39a5f6a01a81411a4558a59a10f87aa88dd6 (git)
Affected: 0626e6641f6b467447c81dd7678a69c66f7746cf , < 1e440d5b25b7efccb3defe542a73c51005799a5f (git)
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Linux Linux Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 5.15.203 , ≤ 5.15.* (semver)
Unaffected: 6.1.135 , ≤ 6.1.* (semver)
Unaffected: 6.6.88 , ≤ 6.6.* (semver)
Unaffected: 6.12.25 , ≤ 6.12.* (semver)
Unaffected: 6.14.4 , ≤ 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

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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.


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