CVE-2026-53048

The CVE concerns the Linux kernel gfs2 subsystem. During unmount, gfs2_log_flush() could dereference sdp->sd_jdesc when it had already been deallocated, leading to a NULL pointer dereference. A prior commit (35264909e9d1) added a NULL check in gfs2_log_flush(), but the dereference in gfs2_log_...