SB20241022130 - Improper locking in Linux kernel net ppp driver
Published: October 22, 2024 Updated: May 12, 2025
Security Bulletin ID
SB20241022130
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-2024-49946)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ppp_channel_bridge_input() function in drivers/net/ppp/ppp_generic.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/176dd41e8c2bd997ed3d66568a3362e69ecce99b
- https://git.kernel.org/stable/c/635deca1800a68624f185dc1e04a8495b48cf185
- https://git.kernel.org/stable/c/f9620e2a665aa642625bd2501282bbddff556bd7
- https://git.kernel.org/stable/c/efe9cc0f7c0279216a5522271ec675b8288602e4
- https://git.kernel.org/stable/c/c837f8583535f094a39386308c2ccfd92c8596cd
- https://git.kernel.org/stable/c/aec7291003df78cb71fd461d7b672912bde55807
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.168
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.113
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.10.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.11.3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.55