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

CVE-2026-71219

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

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Red Hat / Red Hat Enterprise Linux 7	affected
Red Hat / Red Hat Enterprise Linux 8	affected
Red Hat / Red Hat Enterprise Linux 9	affected

CWE

CWE-770

References

https://access.redhat.com/security/cve/CVE-2026-71219
https://bugzilla.redhat.com/show_bug.cgi?id=2507750

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.