Race condition within a thread in Linux kernel - CVE-2022-49596
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104828
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2022-49596
CWE-ID: CWE-366
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 corrupt data.
The vulnerability exists due to a data race within the tcp_mtu_probing() function in net/ipv4/tcp_timer.c, within the __tcp_mtu_to_mss() function in net/ipv4/tcp_output.c. A local user can corrupt data.
How to mitigate CVE-2022-49596
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/0d8a39feb58910a7f7746b1770ee5578cc551fe6
- https://git.kernel.org/stable/c/0fc9357282df055e30990b29f4b7afa53ab42cdb
- https://git.kernel.org/stable/c/78eb166cdefcc3221c8c7c1e2d514e91a2eb5014
- https://git.kernel.org/stable/c/97992e8feff33b3ae154a113ec398546bbacda80
- https://git.kernel.org/stable/c/fdb96b69f5909ffcdd6f1e0902219fc6d7689ff7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.208