CVE-2024-50086

high

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

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

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

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

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

Details

Source: Mitre, NVD

Published: 2024-10-29

Updated: 2024-10-30

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High