Race condition within a thread in Linux kernel - CVE-2022-49637
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104833
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-2022-49637
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 tnode_free() function in net/ipv4/fib_trie.c. A local user can corrupt data.
How to mitigate CVE-2022-49637
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/190cd4ff128373271e065afb20f1d2247b3f10c3
- https://git.kernel.org/stable/c/418b191d5f223a8cb6cab09eae1f72c04ba6adf2
- https://git.kernel.org/stable/c/73318c4b7dbd0e781aaababff17376b2894745c0
- https://git.kernel.org/stable/c/7c1acd98fb221dc0d847451b9ab86319f8b9916c
- https://git.kernel.org/stable/c/9be8aac91960ea32fd0e874758c9afee665c57d2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.56