CVE-2024-26923

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

Description The issue is related to a garbage collector racing against connect() in the Linux kernel, specifically affecting AF UNIX/SOCK STREAM sockets. The garbage collector does not account for the risk of an embryo getting enqueued during garbage collection, leading to an incorrectly elevated inflight count and a dangling pointer within the gc inflight list. This can occur when an unconnected socket (S) is used to send a message to a listening in-flight socket (L) bound to an address, and the file descriptor (V's fd) is passed via sendmsg(), getting the inflight count bumped. The vulnerability can lead to local privilege escalation due to memory corruption, with no additional execution privileges needed, and user interaction is not required for exploitation.

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