Use-after-free in Linux kernel - CVE-2022-49198
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104486
CSH Severity: Low
CVSS v4.0: 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-2022-49198
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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 __mptcp_alloc_tx_skb() function in net/mptcp/protocol.c. A local user can escalate privileges on the system.
How to mitigate CVE-2022-49198
Install update from vendor's website.
Sources
- 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