CVE-2024-53168
kernel: sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 27, 2024
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's sunrpc subsystem. A local attacker with the ability to manage network namespaces can trigger a use-after-free vulnerability when shutting down an RPC TCP connection during network namespace cleanup. Because the TCP socket does not hold a reference to the network namespace, subsequent socket timer operations can access freed memory, resulting in a Denial of Service (DoS) due to a system crash, or potentially allowing privilege escalation.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free