CVE-2025-22040

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.

Score

CVSS 3.1 8.8 High

Status

Analyzed - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-04-16

Last modified

2026-08-05

Weaknesses

CWE-416

Affected products

• Debian Linux (Debian)
• Linux Kernel (Linux)

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