PT-2025-16680 · Linux+6 · Linux Kernel+6

Published

2025-03-27

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Updated

2026-05-26

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CVE-2025-22040

CVSS v3.1

8.8

High

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description A race condition exists between session setup and ksmdb sessions deregister in the Linux kernel, specifically in the ksmbd component. This condition can lead to a session being freed before its connection is added to the channel list of the session, resulting in a use-after-free issue. The patch for this issue checks the reference count of the session before freeing it to prevent this problem.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2025-12647
ALT-PU-2025-7195
BDU:2025-12075
CVE-2025-22040
DLA-4193-1
DSA-5907-1
ECHO-9050-1E97-F170
MGASA-2025-0142
MGASA-2025-0146
OESA-2025-1463
OESA-2025-1464
USN-7594-1
USN-7594-2
USN-7594-3
USN-7605-1
USN-7605-2
USN-7606-1
USN-7628-1
USN-7835-1
USN-7835-2
USN-7835-3
USN-7835-4
USN-7835-5
USN-7835-6
USN-7887-1
USN-7887-2
USN-7940-1
USN-7940-2

Affected Products

Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Ubuntu