CVE-2024-44991

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to the concurrent execution of tcp sk exit batch() in the Linux kernel. This can lead to the destruction of timewait sockets belonging to the exiting netns, causing an erroneous trigger of a debug check. The problem arises because tcp twsk purge() picks up twsk in any dying netns, not just the one passed in via the exit batch list. This allows the netns exit worker to proceed without the expected transition, resulting in an error. A mutex is added to force strict ordering and prevent this issue.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.