CVE-2026-89636

high

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/b1b741cf8e7ce1b91d937e23decd3d3358748700

https://git.kernel.org/stable/c/9ab46a13798a61d9d020b01d4e57efdabe6624fa

https://git.kernel.org/stable/c/7507bd1885643d0461a6017767492450af1ce2a3

https://git.kernel.org/stable/c/5baab40404a9393bcc0b7b8f1950bf2c307e0984

Details

Source: Mitre, NVD

Published: 2026-09-11

Updated: 2026-09-11

Risk Information

CVSS v2

Base Score: 6.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.002