CVEvulnerability
CVE-2026-89636
9.8 CRITICAL
Official page ↗
- Status
- Received
- Published
- 2026-09-11
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
smb: client: clear ce->tgthint in free_tgts()
When free_tgts() frees all structures in ce->tlist, ce->tgthint
is left pointing to one of the freed cache_dfs_tgt structures.
If ce->tgthint is not reset before it is used later, it results
in a use-after-free.
Set ce->tgthint to NULL in free_tgts() after the elements are
freed to reflect that no elements remain.
References
- https://git.kernel.org/stable/c/14f60e959b5ac813715ff72e127beb3584ddabf6 git.kernel.org
- https://git.kernel.org/stable/c/3ff9462bb7a06d8d32a1dc02d39580b078ec9e55 git.kernel.org
- https://git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984 git.kernel.org
- https://git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3 git.kernel.org
- https://git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fa git.kernel.org
- https://git.kernel.org/stable/c/b1b741cf8e7ce1b91d937e23decd3d3358748700 git.kernel.org