SB20250226476 - Improper locking in Linux kernel tty driver
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226476
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2022-49441)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the tty_buffer_alloc() function in drivers/tty/tty_buffer.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/04ee31678c128a6cc7bb057ea189a8624ba5a314
- https://git.kernel.org/stable/c/0bcf44903ef4df742dcada86ccaedd25374ffb50
- https://git.kernel.org/stable/c/18ca0d55e8639b911df8aae1b47598b13f9acded
- https://git.kernel.org/stable/c/3219ac364ac3d8d30771612a6010f1e0b7fa0a28
- https://git.kernel.org/stable/c/4af21b12a60ed2d3642284f4f85b42d7dc6ac246
- https://git.kernel.org/stable/c/4c253caf9264d2aa47ee806a87986dd8eb91a5d9
- https://git.kernel.org/stable/c/6b9dbedbe3499fef862c4dff5217cf91f34e43b3
- https://git.kernel.org/stable/c/9834b13e8b962caa28fbcf1f422dd82413da4ede
- https://git.kernel.org/stable/c/b3c974501d0c32258ae0e04e5cc3fb92383b40f6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.14