CVE-2026-23226

high

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: add chann_lock to protect ksmbd_chann_list xarray ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del). Adds rw_semaphore chann_lock to struct ksmbd_session and protects all xa_load/xa_store/xa_erase accesses.

References

https://git.kernel.org/stable/c/e4a8a96a93d08570e0405cfd989a8a07e5b6ff33

https://git.kernel.org/stable/c/36ef605c0395b94b826a8c8d6f2697071173de6e

Details

Source: Mitre, NVD

Published: 2026-02-18

Updated: 2026-02-18

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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00018