CVE-2026-89637
Public on 2026-09-11
Modified on 2026-09-17
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2
smb: client: fix UAF and buffer leak in cifs_check_trans2() for malformed secondary T2
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | kernel | Pending Fix | ||
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | Pending Fix | ||
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | Pending Fix | ||
| Amazon Linux 2 - Kernel-5.10 Extra | kernel | 2026-10-17 | ALAS2KERNEL-5.10-2026-135 | Fixed |
| Amazon Linux 2023 | kernel | 2026-10-12 | ALAS2023-2026-3183 | Fixed |
| Amazon Linux 2023 | kernel6.12 | 2026-10-12 | ALAS2023-2026-3193 | Fixed |
| Amazon Linux 2023 | kernel6.18 | 2026-10-12 | ALAS2023-2026-3187 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |