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.
Fix
Patch, vendor advisory and mitigation references on NVD 5
- https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325 Patch
- https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f Patch
- https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e Patch
- https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10 Patch
- https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6 Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.8 · linux, debianNVD modified 2026-10-15 22:18
Affected (CPE criteria) 4
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
References 7
- https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325 Patch
- https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f Patch
- https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e Patch
- https://git.kernel.org/stable/c/b61f04d5d73c53d183019bafe22fb700a739bac5
- https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10 Patch
- https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6 Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html Mailing List, Third Party Advisory