{"id":"CVE-2026-71219","aliases":["AZL-99906","DEBIAN-CVE-2026-71219","EUVD-2026-70447","GHSA-5ggp-489g-rjqr","UBUNTU-CVE-2026-71219"],"status":"published","title":"Gfs2-utils: gfs2-utils: stack overflow via alloca(1\u003c\u003cdi_depth) in hash table traversal","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.","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00115,"percentile":0.01556,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-770"],"published":"2026-09-03T12:23:06Z","modified":"2026-11-06T10:05:04Z","fixes":[{"ecosystem":"Debian:14","package":"gfs2-utils","fixed_in":["3.6.1-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.5.1-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.0-2","3.5.1-1","3.5.1-2","3.6.0-1","3.6.1-1","3.6.1-2","3.6.1-3"]},{"source":"osv","ecosystem":"Debian:13","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.1-1","3.6.1-2","3.6.1-3"]},{"source":"osv","ecosystem":"Debian:14","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.1-2"}]}],"versions":["3.6.1-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.6-0ubuntu2","3.1.6-0ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.9-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.0-2","3.2.0-3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.0-2","3.4.1-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.1-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.1-1build1","3.6.1-2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"gfs2-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.1-1","3.6.1-1build1"]}],"products":[{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"},{"vendor":"redhat","product":"enterprise_linux"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-71219","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507750","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71219","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5ggp-489g-rjqr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-71219","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-71219","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-71219","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-71219","title":"Gfs2-utils: gfs2-utils: stack overflow via alloca(1\u003c\u003cdi_depth) in hash table traversal","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.","status":"published","published":"2026-09-03T12:23:06.486Z","modified":"2026-11-05T22:52:29.979Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-05T23:55:29.66083Z"}],"euvd":[{"id":"EUVD-2026-70447","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.","status":"published","published":"2026-09-03T12:23:06Z","modified":"2026-11-05T22:52:29Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-06T00:02:32.983223Z"}],"ghsa":[{"id":"GHSA-5ggp-489g-rjqr","title":"A stack overflow vulnerability was found in gfs2-utils. The hash table traversal code in metawalk...","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.","status":"published","published":"2026-09-03T15:32:10Z","modified":"2026-09-03T15:32:11Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T15:11:18.49317Z"}],"nvd":[{"id":"CVE-2026-71219","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.","status":"published","published":"2026-09-03T13:06:02.55Z","modified":"2026-11-05T23:16:58.353Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-770"],"updated_at":"2026-11-06T01:57:39.734161Z"}],"osv":[{"id":"DEBIAN-CVE-2026-71219","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.","status":"published","published":"2026-09-03T13:06:02.55Z","modified":"2026-11-06T10:05:04.160077234Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-06T10:38:22.758306Z"},{"id":"UBUNTU-CVE-2026-71219","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.","status":"published","published":"2026-09-03T13:06:00Z","modified":"2026-10-17T13:00:43.956507232Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"},{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:57:03.035847Z"},{"id":"AZL-99906","title":"CVE-2026-71219 affecting package gfs2-utils 3.5.1-1","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.","status":"published","published":"2026-09-03T13:06:02Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.480138Z"}]}}