SB2024111927 - Use-after-free in Linux kernel server mgmt
Published: November 19, 2024 Updated: May 12, 2025
Security Bulletin ID
SB2024111927
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2024-50286)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ksmbd_expire_session() and ksmbd_sessions_deregister() functions in fs/smb/server/mgmt/user_session.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/f56446ba5378d19e31040b548a14ee9a8f1500ea
- https://git.kernel.org/stable/c/e923503a56b3385b64ae492e3225e4623f560c5b
- https://git.kernel.org/stable/c/e7a2ad2044377853cf8c59528dac808a08a99c72
- https://git.kernel.org/stable/c/0a77715db22611df50b178374c51e2ba0d58866e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.117
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.61