CVE-2024-50086

HIGH

Linux Kernel < 6.1.114 - Use-After-Free in SMB2 Session Handling

Title source: llm

Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix user-after-free from session log off There is racy issue between smb2 session log off and smb2 session setup. It will cause user-after-free from session log off. This add session_lock when setting SMB2_SESSION_EXPIRED and referece count to session struct not to free session while it is being used.

References (6)

Core 6

Core References

Mailing List

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Patch

https://git.kernel.org/stable/c/0f62358ce85b2d4c949ef1b648be01b29cec667a

Patch

https://git.kernel.org/stable/c/a9839c37fd813b432988f58a9d9dd59253d3eb2c

Patch

https://git.kernel.org/stable/c/5511999e9615e4318e9142d23b29bd1597befc08

Patch

https://git.kernel.org/stable/c/ee371898b53a9b9b51c02d22a8c31bfb86d45f0d

Patch

https://git.kernel.org/stable/c/7aa8804c0b67b3cb263a472d17f2cb50d7f1a930

Scores

CVSS v3 7.0

EPSS 0.0021

EPSS Percentile 11.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-416

Status published

Products (18)

linux/Kernel 5.15.0 - 5.15.171linux

linux/Kernel 5.16.0 - 6.1.114linux

linux/Kernel 6.2.0 - 6.6.58linux

linux/Kernel 6.7.0 - 6.11.5linux

Linux/Linux < 5.15

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 0f62358ce85b2d4c949ef1b648be01b29cec667a

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 5511999e9615e4318e9142d23b29bd1597befc08

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - 7aa8804c0b67b3cb263a472d17f2cb50d7f1a930

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - a9839c37fd813b432988f58a9d9dd59253d3eb2c

Linux/Linux 0626e6641f6b467447c81dd7678a69c66f7746cf - ee371898b53a9b9b51c02d22a8c31bfb86d45f0d

... and 8 more

Published Oct 29, 2024

Tracked Since Feb 18, 2026