critical9.8
CVE-2025-37778
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix dangling pointer in krb_authenticate krb_authenticate frees sess->user and does …
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.15 before 6.1.135 from 6.2 before 6.6.88 from 6.7 before 6.12.25 from 6.13 before 6.14.4 Version 6.15 |
| Debian | Debian Linux | Version 11.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/1db2451de23e98bc864c6a6e52aa0d82c91cb325
- https://git.kernel.org/stable/c/1e440d5b25b7efccb3defe542a73c51005799a5f
- https://git.kernel.org/stable/c/6e30c0e10210c714f3d4453dc258d4abcc70364e
- https://git.kernel.org/stable/c/b61f04d5d73c53d183019bafe22fb700a739bac5
- https://git.kernel.org/stable/c/d5b554bc8d554ed6ddf443d3db2fad9f665cec10
- https://git.kernel.org/stable/c/e83e39a5f6a01a81411a4558a59a10f87aa88dd6
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html