SB20250226303 - Use-after-free in Linux kernel mptcp
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226303
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-2022-49198)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the __mptcp_alloc_tx_skb() function in net/mptcp/protocol.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/3ef3905aa3b5b3e222ee6eb0210bfd999417a8cc
- https://git.kernel.org/stable/c/4d54181eba4b077fb74033a7186898ad4000a7a5
- https://git.kernel.org/stable/c/752add6f5ce5305e55d8bda4ac8d69be3a09f14d
- https://git.kernel.org/stable/c/af61a8f7603926c26158153d0a0755764d82657c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.64