CVE-2025-22040

EUVD-2025-11248
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix session use-after-free in multichannel connection

There is a race condition between session setup and
ksmbd_sessions_deregister. The session can be freed before the connection
is added to channel list of session.
This patch check reference count of session before freeing it.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA-ADPADP
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 15%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
𝑥
< 6.1.134
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.87
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.23
linuxlinux_kernel
6.13 ≤
𝑥
< 6.13.11
linuxlinux_kernel
6.14 ≤
𝑥
< 6.14.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.159-1
fixed
bookworm (security)
6.1.162-1
fixed
bullseye
5.10.223-1
not-affected
bullseye (security)
5.10.249-1
fixed
forky
6.18.15-1
fixed
sid
6.18.15-1
fixed
trixie
6.12.63-1
fixed
trixie (security)
6.12.73-1
fixed
linux-6.1
bullseye (security)
6.1.162-1~deb11u1
fixed
Common Weakness Enumeration
References
https://git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737
https://git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7f
https://git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfd
https://git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17d
https://git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16b
https://git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345db
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html