8.8

CVE-2025-22041

ksmbd: fix use-after-free in ksmbd_sessions_deregister()

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix use-after-free in ksmbd_sessions_deregister()

In multichannel mode, UAF issue can occur in session_deregister
when the second channel sets up a session through the connection of
the first channel. session that is freed through the global session
table can be accessed again through ->sessions of connection.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 6.1.134
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.87
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.13
Linux ≫ Linux Kernel Version >= 6.13 < 6.13.11
Linux ≫ Linux Kernel Version >= 6.14 < 6.14.2
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.6% 0.444
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
416baaa9-dc9f-4396-8d5f-8c081fb06d67 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://git.kernel.org/stable/c/f0eb3f575138b816da74697bd506682574742fcd
Patch
https://git.kernel.org/stable/c/a8a8ae303a8395cbac270b5b404d85df6ec788f8
Patch
https://git.kernel.org/stable/c/ca042cc0e4f9e0d2c8f86dd67e4b22f30a516a9b
Patch
https://git.kernel.org/stable/c/8ed0e9d2f410f63525afb8351181eea36c80bcf1
Patch
https://git.kernel.org/stable/c/33cc29e221df7a3085ae413e8c26c4e81a151153
Patch
https://git.kernel.org/stable/c/15a9605f8d69dc85005b1a00c31a050b8625e1aa
Patch
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html