Description
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.
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 < b61f04d5d73c53d183019bafe22fb700a739bac5affected0626e6641f6b467447c81dd7678a69c66f7746cf to < d5b554bc8d554ed6ddf443d3db2fad9f665cec10affected0626e6641f6b467447c81dd7678a69c66f7746cf to < 1db2451de23e98bc864c6a6e52aa0d82c91cb325affected0626e6641f6b467447c81dd7678a69c66f7746cf to < 6e30c0e10210c714f3d4453dc258d4abcc70364eaffected0626e6641f6b467447c81dd7678a69c66f7746cf to < e83e39a5f6a01a81411a4558a59a10f87aa88dd6affected0626e6641f6b467447c81dd7678a69c66f7746cf to < 1e440d5b25b7efccb3defe542a73c51005799a5faffected
Linux Linux
Default version status: affected
5.15affected0 to < 5.15unaffected5.15.203 to ≤ 5.15.*unaffected6.1.135 to ≤ 6.1.*unaffected6.6.88 to ≤ 6.6.*unaffected6.12.25 to ≤ 6.12.*unaffected6.14.4 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/b61f04d5d73c53d183019bafe22fb700a739bac5 ↗
- https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10 ↗
- https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325 ↗
- https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e ↗
- https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6 ↗
- https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html ↗