CVE-2026-53048

A flaw was found in the Linux kernel's gfs2 filesystem. During the unmount process, a NULL pointer dereference can occur when flushing outstanding glock work. This happens because gfs2_log_flush() is called when a critical data structure (sdp->sd_jdesc) has already been deallocated, and a subsequent dereference in gfs2_log_release() lacks a necessary NULL check. An attacker could potentially exploit this to cause a system crash, leading to a Denial of Service (DoS).

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.