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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0626e6641f6b467447c81dd7678a69c66f7746cf to < e34a33d5d7e87399af0a138bb32f6a3e95dd83d2affected0626e6641f6b467447c81dd7678a69c66f7746cf to < b447463562238428503cfba1c913261047772f90affected0626e6641f6b467447c81dd7678a69c66f7746cf to < e18c616718018dfc440e4a2d2b94e28fe91b1861affected0626e6641f6b467447c81dd7678a69c66f7746cf to < 28c756738af44a404a91b77830d017bb0c525890affected0626e6641f6b467447c81dd7678a69c66f7746cf to < e86e9134e1d1c90a960dd57f59ce574d27b9a124affected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected6.1.138 to ≤ 6.1.*unaffected6.6.90 to ≤ 6.6.*unaffected6.12.28 to ≤ 6.12.*unaffected6.14.6 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/e34a33d5d7e87399af0a138bb32f6a3e95dd83d2 ↗
- https://git.kernel.org/stable/c/b447463562238428503cfba1c913261047772f90 ↗
- https://git.kernel.org/stable/c/e18c616718018dfc440e4a2d2b94e28fe91b1861 ↗
- https://git.kernel.org/stable/c/28c756738af44a404a91b77830d017bb0c525890 ↗
- https://git.kernel.org/stable/c/e86e9134e1d1c90a960dd57f59ce574d27b9a124 ↗
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html ↗