CVE-2023-53394

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> net/mlx5e: xsk: Fix crash on regular rq reactivation<br /> <br /> When the regular rq is reactivated after the XSK socket is closed<br /> it could be reading stale cqes which eventually corrupts the rq.<br /> This leads to no more traffic being received on the regular rq and a<br /> crash on the next close or deactivation of the rq.<br /> <br /> Kal Cuttler Conely reported this issue as a crash on the release<br /> path when the xdpsock sample program is stopped (killed) and restarted<br /> in sequence while traffic is running.<br /> <br /> This patch flushes all cqes when during the rq flush. The cqe flushing<br /> is done in the reset state of the rq. mlx5e_rq_to_ready code is moved<br /> into the flush function to allow for this.