#VU100616 Use-after-free in Linux kernel - CVE-2024-50286
Published: November 19, 2024 / Updated: May 12, 2025
Vulnerability identifier: #VU100616
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-50286
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
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.
External links
- 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