Vulnerability Details CVE-2026-71219
A stack overflow vulnerability was found in gfs2-utils. The hash table traversal code in metawalk.c uses alloca() with an exponentially-derived size from the untrusted on-disk di_depth field without bounds validation. A crafted GFS2 filesystem image with a large di_depth value causes stack exhaustion and a denial of service when processed by fsck.gfs2, gfs2_edit, or savemeta.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 1.8%
CVSS Severity
CVSS v3 Score 4.7