CVE-2025-38561

EUVD-2025-26504
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix Preauh_HashValue race condition

If client send multiple session setup requests to ksmbd,
Preauh_HashValue race condition could happen.
There is no need to free sess->Preauh_HashValue at session setup phase.
It can be freed together with session at connection termination phase.
Race Condition
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.7 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA-ADPADP
8.5 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 6%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
5.15 ≤
𝑥
< 6.1.148
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.102
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.42
linuxlinux_kernel
6.13 ≤
𝑥
< 6.15.10
linuxlinux_kernel
6.16 ≤
𝑥
< 6.16.1
debiandebian_linux
11.0
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
6.18.9-1
fixed
sid
6.18.12-1
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/44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6
https://git.kernel.org/stable/c/6613887da1d18dd2ecfd6c6148a873c4d903ebdc
https://git.kernel.org/stable/c/7d7c0c5304c88bcbd7a85e9bcd61d27e998ba5fc
https://git.kernel.org/stable/c/b69fd87076daa66f3d186bd421a7b0ee0cb45829
https://git.kernel.org/stable/c/edeecc7871e8fc0878d53ce286c75040a0e38f6c
https://git.kernel.org/stable/c/fbf5c0845ed15122a770bca9be1d9b60b470d3aa
https://www.zerodayinitiative.com/advisories/ZDI-25-916/
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html