SB20250327111 - Use-after-free in Linux kernel tty vt driver
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250327111
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-2023-52973)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the vcs_read() function in drivers/tty/vt/vc_screen.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/226fae124b2dac217ea5436060d623ff3385bc34
- https://git.kernel.org/stable/c/55515d7d8743b71b80bfe68e89eb9d92630626ab
- https://git.kernel.org/stable/c/6332f52f44b9776568bf3c0b714ddfb0bb175e78
- https://git.kernel.org/stable/c/8506f16aae9daf354e3732bcfd447e2a97f023df
- https://git.kernel.org/stable/c/af79ea9a2443016f64d8fd8d72020cc874f0e066
- https://git.kernel.org/stable/c/d0332cbf53dad06a22189cc341391237f4ea6d9f
- https://git.kernel.org/stable/c/fc9e27f3ba083534b8bbf72ab0f5c810ffdc7d18
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.93