{"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-2026-71224","cwes":["CWE-770"],"description":"A stack overflow vulnerability was found in gfs2-utils. The metadata walk code in metawalk.c uses alloca() with an untrusted inode height value from on-disk metadata without bounds validation, causing stack exhaustion and a denial of service when processing crafted GFS2 filesystem images.","epss":{"date":"2026-11-05","percentile":0.03634,"score":0.00143},"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":1793919163128,"publishedAt":1788438211604,"references":[{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-71224"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2511397"}],"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":"5c170b660ad2aeef8fc11ab7d3726143d4ff89eef50ceb252677e75b54d2ef5a","sources":[{"modifiedAt":1793919163128,"name":"CNA: redhat","retrievedAt":1793920163486,"url":"https://www.cve.org/CVERecord?id=CVE-2026-71224"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793920182602,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-71224"}],"ssvc":{"assessedAt":1788440249852,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Gfs2-utils: gfs2-utils: stack overflow via alloca(i_height) in metadata walk","updatedAt":1793920182602}