High severity8.8NVD Advisory· Published Apr 16, 2025· Updated Apr 6, 2026

CVE-2025-22040

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Debian/linux
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Linux/Kernel2 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.15,<6.1.134
- (no CPE)

Patches

Vulnerability mechanics

References

git.kernel.org/stable/c/3980770cb1470054e6400fd97668665975726737nvdPatch
git.kernel.org/stable/c/596407adb9af1ee75fe7c7529607783d31b66e7fnvdPatch
git.kernel.org/stable/c/7dfbd4c43eed91dd2548a95236908025707a8dfdnvdPatch
git.kernel.org/stable/c/9069939d762138e232a6f79e3e1462682ed6a17dnvdPatch
git.kernel.org/stable/c/94c281721d4ed2d972232414b91d98a6f5bdb16bnvdPatch
git.kernel.org/stable/c/fa4cdb8cbca7d6cb6aa13e4d8d83d1103f6345dbnvdPatch
lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlnvdMailing ListThird Party Advisory

News mentions

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cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000