CVE-2026-71219
Fixed in a distro release EPSS <1%CVSS 4.7
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.
Products: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | gfs2-utils | 3.1.10-6.amzn2.0.1 |
| Debian 12 | gfs2-utils | no fix |
| Debian 13 | gfs2-utils | no fix |
| Debian 14 | gfs2-utils | 3.6.1-2 |
| Ubuntu 16.04 LTS | gfs2-utils | no fix |
| Ubuntu 18.04 LTS | gfs2-utils | no fix |
| Ubuntu 20.04 LTS | gfs2-utils | no fix |
| Ubuntu 22.04 LTS | gfs2-utils | no fix |
| Ubuntu 24.04 LTS | gfs2-utils | no fix |
| Ubuntu 26.04 LTS | gfs2-utils | no fix |
| Ubuntu 26.10 | gfs2-utils | no fix |