{"affected":[{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gfs2-utils","product":"Red Hat Enterprise Linux 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gfs2-utils","product":"Red Hat Enterprise Linux 8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"affected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"gfs2-utils","product":"Red Hat Enterprise Linux 9","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-71219","cwes":["CWE-770"],"description":"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.","epss":{"date":"2026-11-05","percentile":0.01549,"score":0.00115},"exploits":[],"kev":null,"metrics":[{"score":4.7,"severity":"medium","source":"CNA: redhat","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793919149979,"publishedAt":1788438186486,"references":[{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-71219"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507750"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"Run gfs2-utils tools in a containerized or VM-isolated environment when processing potentially compromised or untrusted GFS2 filesystem images. Disable automatic fsck at boot for GFS2 filesystems until patches are applied by setting fs_passno to 0 in /etc/fstab. Use ulimit -s to reduce the stack size limit, converting potential exploitation into a controlled crash."}],"revision":"b257ef1a44e2a15ab99a709bfc4a33b8b5907aefccb1835a76497225395203e9","sources":[{"modifiedAt":1793919149979,"name":"CNA: redhat","retrievedAt":1793920159040,"url":"https://www.cve.org/CVERecord?id=CVE-2026-71219"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793920182967,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-71219"}],"ssvc":{"assessedAt":1788547289343,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Gfs2-utils: gfs2-utils: stack overflow via alloca(1<<di_depth) in hash table traversal","updatedAt":1793920182967}