CVE-2024-39293

In the Linux kernel, the following vulnerability has been resolved: Revert "xsk: Support redirect to any socket bound to the same umem" This reverts commit 2863d665ea41282379f108e4da6c8a2366ba66db. This patch introduced a potential kernel crash when multiple napi instances redirect to the same AF_XDP socket. By removing the queue_index check, it is possible for multiple napi instances to access the Rx ring at the same time, which will result in a corrupted ring state which can lead to a crash when flushing the rings in __xsk_flush(). This can happen when the linked list of sockets to flush gets corrupted by concurrent accesses. A quick and small fix is not possible, so let us revert this for now.

The following products are affected by CVE-2024-39293 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-39293.

URL	Resource
https://git.kernel.org/stable/c/19cb40b1064566ea09538289bfcf5bc7ecb9b6f5
https://git.kernel.org/stable/c/7fcf26b315bbb728036da0862de6b335da83dff2
https://lore.kernel.org/linux-cve-announce/2024062548-CVE-2024-39293-d42a@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2024-39293
https://www.cve.org/CVERecord?id=CVE-2024-39293