CVE-2026-74728

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the XFS file system where the xfs buf free() function fails to properly handle a NULL b addr value. When the xfs buf alloc backing mem() function fails, xfs buf free() is triggered while the b addr variable remains NULL. This leads to the execution of the folio put() path, which subsequently calls virt to folio(NULL), resulting in an invalid address dereference and a kernel crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.