{"id":"CVE-2026-19411","aliases":["AZL-95634","AZL-95637","DEBIAN-CVE-2026-19411","EUVD-2026-55827","GHSA-53vg-jq3h-5r52","UBUNTU-CVE-2026-19411"],"status":"published","title":"Shim/dp.c library: null-pointer dereference in is_removable_media_path() when devicepathtostr() returns null","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","severity":{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00133,"percentile":0.02907,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2026-08-10T20:45:52Z","modified":"2026-11-05T05:40:51Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"shim-unsigned-aarch64","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"16.1-2"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"shim-unsigned-x64","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"16.1-2"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.7-1","15.8-1","15.8-1~deb10u1","15.8-1~deb11u1","15.8-1~deb12u1","16.1-1","16.1-2","16.1-2~deb12u1","16.1-2~deb13u1"]},{"source":"osv","ecosystem":"Debian:13","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.8-1","16.1-1","16.1-2","16.1-2~deb12u1","16.1-2~deb13u1"]},{"source":"osv","ecosystem":"Debian:14","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.8-1","16.1-1","16.1-2","16.1-2~deb12u1","16.1-2~deb13u1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1","1.4~ubuntu0.14.04.1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4-0ubuntu4","0.8-0ubuntu2","0.9+1474479173.6c180c6-1ubuntu1","13-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3","1.4","1.5","1.6","1.9","1.17~14.04.1","1.18~14.04.1","1.19~14.04.1","1.32~14.04.2","1.33.1~14.04.2","1.33.1~14.04.3","1.33.1~14.04.4","1.33.1~14.04.5"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1","1.4~ubuntu0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8-0ubuntu2","0.9+1474479173.6c180c6-1ubuntu1","13-0ubuntu2","15+1533136590.3beb971-0ubuntu1","15+1552672080.a4a1fbe-0ubuntu2","15.4-0ubuntu7"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.11","1.12","1.17~16.04.1","1.18~16.04.1","1.19~16.04.1","1.27~16.04.1","1.28~16.04.1","1.32~16.04.1","1.33.1~16.04.1","1.33.1~16.04.2","1.33.1~16.04.3","1.33.1~16.04.4","1.33.1~16.04.5","1.33.1~16.04.6","1.33.1~16.04.10"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1","1.4~ubuntu0.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9+1474479173.6c180c6-1ubuntu1","13-0ubuntu2","15+1533136590.3beb971-0ubuntu1","15+1552672080.a4a1fbe-0ubuntu2","15.4-0ubuntu7","15.4-0ubuntu9","15.7-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.32","1.33.1","1.34.4","1.34.5","1.34.6","1.34.7","1.34.8","1.34.9","1.34.9.1","1.34.9.2","1.37~18.04.1","1.37~18.04.2","1.37~18.04.3","1.37~18.04.6","1.37~18.04.8","1.37~18.04.10","1.37~18.04.11","1.37~18.04.13"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.5","1.6~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15+1533136590.3beb971-0ubuntu1","15+1552672080.a4a1fbe-0ubuntu1","15+1552672080.a4a1fbe-0ubuntu2","15.4-0ubuntu7","15.4-0ubuntu9","15.7-0ubuntu1","15.8-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.39","1.40","1.40.3","1.40.4","1.40.6","1.40.7","1.40.9","1.40.10","1.41"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.4-0ubuntu9","15.7-0ubuntu1","15.8-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.51","1.51.3","1.51.4"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8","1.9","1.9build1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.7-0ubuntu1","15.8-0ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.56","1.57","1.58"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9build2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.8-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.59"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"secureboot-db","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.9build1","1.9build2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"shim","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["15.8-0ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"shim-signed","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.59"]}],"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"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-19411","tags":["vdb-entry","x_refsource_REDHAT","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2513060","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19411","tags":["web"]},{"url":"https://github.com/advisories/GHSA-53vg-jq3h-5r52"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-19411","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-19411","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-19411","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-19411","title":"Shim/dp.c library: null-pointer dereference in is_removable_media_path() when devicepathtostr() returns null","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T20:45:52.786Z","modified":"2026-11-06T18:09:10.248Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-06T19:59:19.701997Z"}],"euvd":[{"id":"EUVD-2026-55827","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T20:45:52Z","modified":"2026-11-06T18:09:10Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low"}],"updated_at":"2026-11-06T19:05:52.672747Z"}],"ghsa":[{"id":"GHSA-53vg-jq3h-5r52","title":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A...","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T21:32:07Z","modified":"2026-08-10T21:32:15Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:10:16.495213Z"}],"nvd":[{"id":"CVE-2026-19411","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T21:17:23.06Z","modified":"2026-11-06T19:17:48.13Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-06T22:02:12.917468Z"}],"osv":[{"id":"DEBIAN-CVE-2026-19411","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T21:17:23.06Z","modified":"2026-11-07T09:47:27.943946284Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low"}],"updated_at":"2026-11-07T10:14:39.995311Z"},{"id":"UBUNTU-CVE-2026-19411","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T21:17:00Z","modified":"2026-10-17T12:59:54.476731907Z","cvss":[{"version":"3.1","score":3.9,"vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L","level":"low"}],"updated_at":"2026-11-02T16:56:01.334185Z"},{"id":"AZL-95634","title":"CVE-2026-19411 affecting package shim-unsigned-aarch64 16.1-2","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T21:17:23Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.077208Z"},{"id":"AZL-95637","title":"CVE-2026-19411 affecting package shim-unsigned-x64 16.1-2","description":"A NULL pointer vulnerability has been found in the the shim application of dp.c library. A missing NULL pointer could allow attackers to perform a denial of service attack on a system that uses shim application for UEFI bootloader.","status":"published","published":"2026-08-10T21:17:23Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:26.077208Z"}]}}
