{"id":"UBUNTU-CVE-2026-71219","details":"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.","modified":"2026-09-24T02:00:51.776083319Z","published":"2026-09-03T13:06:00Z","upstream":["CVE-2026-71219"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-71219"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-71219"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507750"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-71219"}],"affected":[{"package":{"name":"gfs2-utils","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/gfs2-utils?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.6-0ubuntu2","3.1.6-0ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"gfs2-utils","binary_version":"3.1.6-0ubuntu3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71219.json"}},{"package":{"name":"gfs2-utils","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/gfs2-utils?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.9-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"gfs2-utils","binary_version":"3.1.9-2ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71219.json"}},{"package":{"name":"gfs2-utils","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gfs2-utils?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.0-2","3.2.0-3"],"ecosystem_specific":{"binaries":[{"binary_name":"gfs2-utils","binary_version":"3.2.0-3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71219.json"}},{"package":{"name":"gfs2-utils","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/gfs2-utils?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.0-2","3.4.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"gfs2-utils","binary_version":"3.4.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71219.json"}},{"package":{"name":"gfs2-utils","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/gfs2-utils?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.5.1-1","binary_name":"gfs2-utils"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71219.json"}},{"package":{"name":"gfs2-utils","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/gfs2-utils?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.1-1","3.6.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"gfs2-utils","binary_version":"3.6.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71219.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}