CVE-2024-49864: Linux Kernel

Medium severity, CVSS 4.7. EPSS: 0.4% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix a race between socket set up and I/O thread creation In rxrpc_open_socket(), it sets up the socket and then sets up the I/O thread that will handle it. This is a problem, however, as there's a gap between the two phases in which a packet may come into rxrpc_encap_rcv() from the UDP packet but we oops when trying to wake the not-yet created I/O thread. As a quick fix, just make rxrpc_encap_rcv() discard the packet if there's no I/O thread yet. A better, but more intrusive fix would perhaps be to rearrange things such that the socket creation is done by the I/O thread.

Affected products

• Linux Linux Kernel: from 6.2, up to and including 6.6.55; from 6.10, before 6.10.14 (fixed in 6.10.14); from 6.11, before 6.11.3 (fixed in 6.11.3); version 6.12 only

Published 2024-10-21. Last modified 2026-08-04.