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Description

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.

PUBLISHED Reserved 2025-04-16 | Published 2025-05-20 | Updated 2026-05-11 | Assigner Linux




CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Product status

Default status
unaffected

0626e6641f6b467447c81dd7678a69c66f7746cf (git) before e34a33d5d7e87399af0a138bb32f6a3e95dd83d2
affected

0626e6641f6b467447c81dd7678a69c66f7746cf (git) before b447463562238428503cfba1c913261047772f90
affected

0626e6641f6b467447c81dd7678a69c66f7746cf (git) before e18c616718018dfc440e4a2d2b94e28fe91b1861
affected

0626e6641f6b467447c81dd7678a69c66f7746cf (git) before 28c756738af44a404a91b77830d017bb0c525890
affected

0626e6641f6b467447c81dd7678a69c66f7746cf (git) before e86e9134e1d1c90a960dd57f59ce574d27b9a124
affected

Default status
affected

5.15
affected

Any version before 5.15
unaffected

6.1.138 (semver)
unaffected

6.6.90 (semver)
unaffected

6.12.28 (semver)
unaffected

6.14.6 (semver)
unaffected

6.15 (original_commit_for_fix)
unaffected

References

lists.debian.org/debian-lts-announce/2025/08/msg00010.html

git.kernel.org/...c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2

git.kernel.org/...c/b447463562238428503cfba1c913261047772f90

git.kernel.org/...c/e18c616718018dfc440e4a2d2b94e28fe91b1861

git.kernel.org/...c/28c756738af44a404a91b77830d017bb0c525890

git.kernel.org/...c/e86e9134e1d1c90a960dd57f59ce574d27b9a124

cve.org (CVE-2025-37924)

nvd.nist.gov (CVE-2025-37924)

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