{"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-2026-71221","cwes":["CWE-787"],"description":"A stack out-of-bounds write vulnerability was found in gfs2-utils. In savemeta, the height value from on-disk inode metadata is used as a loop bound without bounds checking, causing a stack buffer overflow that may lead to arbitrary code execution when processing crafted GFS2 filesystem images.","epss":{"date":"2026-11-05","percentile":0.02955,"score":0.00134},"exploits":[],"kev":null,"metrics":[{"score":7,"severity":"high","source":"CNA: redhat","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793919155286,"publishedAt":1788438197596,"references":[{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-71221"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2511396"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"Do not run gfs2-utils savemeta on untrusted or potentially compromised GFS2 filesystem images. Run gfs2-utils tools in a containerized or VM-isolated environment when processing untrusted images. Disable automatic fsck at boot for GFS2 filesystems until patches are applied by setting fs_passno to 0 in /etc/fstab."}],"revision":"79a852dbacd7d924973f6ea31f96f570cc419ddd39e81fa9a2bdd7c900f1488c","sources":[{"modifiedAt":1793919155286,"name":"CNA: redhat","retrievedAt":1793920161254,"url":"https://www.cve.org/CVERecord?id=CVE-2026-71221"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793920182777,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-71221"}],"ssvc":{"assessedAt":1788444476982,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Gfs2-utils: gfs2-utils: stack out-of-bounds write via unchecked height in savemeta","updatedAt":1793920182777}