CVE-2026-23226CWE-416

CVE-2026-23226

High · published February 18, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
40.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00479 · 40.4th percentile
Weakness
CWE-416 · Use After Free
Published
2026-02-18T21:22Z
Affected products (2)
ProductVersionsFixed in
linux/linux_kernel≥ 6.3, < 6.18.116.18.11
linux/linux_kernel≥ 6.19, < 6.19.16.19.1
References (5)
https://git.kernel.org/stable/c/36ef605c0395b94b826a8c8d6f2697071173de6e · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43ad494ac6e940a8eabf25d5bd77bb3bb53b1153 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4c2ca31608521895dd742a43beca4b4d29762345 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f3a06cc57976cafa8c6f716646be6c79a99e485 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4a8a96a93d08570e0405cfd989a8a07e5b6ff33 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 18 FEB 14:53Z
    ksmbd: add chann_lock to protect ksmbd_chann_list xarray
    cvelistv5