CVE-2026-71219 Gfs2-utils: gfs2-utils: stack overflow via alloca(1<<di_depth) in hash table traversal

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 didepth field without bounds validation. A crafted GFS2 filesystem image with a large didepth value causes stack exhaustion...