{"id":"CVE-2026-47766","aliases":["ALPINE-CVE-2026-47766","AZL-95985","BELL-CVE-2026-47766","DEBIAN-CVE-2026-47766","EUVD-2026-58714","GHSA-7vwr-4279-7gq5","RHSA-2026:54855","SUSE-SU-2026:22247-1","SUSE-SU-2026:22395-1","UBUNTU-CVE-2026-47766","openSUSE-SU-2026:11030-1"],"status":"published","title":"crun follows rootfs /dev symlink while creating default devices","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","severity":{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00196,"percentile":0.09383,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-61"],"published":"2026-05-28T10:49:42.699266Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Alpine:v3.23","package":"crun","fixed_in":["1.28-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"crun","fixed_in":["1.28-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:23","package":"crun","fixed_in":["1.17-r1"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"crun","fixed_in":["1.23.1-r1"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"crun","fixed_in":["1.28-r0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"crun","fixed_in":["1.28-1"],"sources":["osv"]},{"ecosystem":"Red Hat:hummingbird:1","package":"crun","fixed_in":["0:1.28-2.hum1"],"sources":["osv"]},{"ecosystem":"Red Hat:hummingbird:1","package":"crun-krun","fixed_in":["0:1.28-2.hum1"],"sources":["osv"]},{"ecosystem":"Red Hat:hummingbird:1","package":"crun-wasm","fixed_in":["0:1.28-2.hum1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Micro 6.1","package":"crun","fixed_in":["1.15-slfo.1.1_2.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Micro 6.0","package":"crun","fixed_in":["1.14-3.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Tumbleweed","package":"crun","fixed_in":["1.28-1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.23","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28-r0"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.24-6"}]}]},{"source":"osv","ecosystem":"Alpaquita:23","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.7-r0"},{"fixed":"1.17-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.21-r0"},{"fixed":"1.23.1-r1"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.8.5-r0"},{"fixed":"1.28-r0"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10-1","1.11-1","1.11.1-1","1.12-1","1.13-1","1.14-1","1.14.1-1","1.14.4-1","1.15-1","1.16-1","1.16.1-1","1.17-1","1.18-1","1.18.1-1","1.18.2-1","1.19.1-1","1.20-1","1.21-1","1.21-2","1.21-3","1.24-1","1.26-1","1.27-1","1.27.1-1","1.28-1","1.8.1-1","1.8.1-1+deb12u1","1.8.5-1","1.8.6-1","1.8.7-1","1.9-1"]},{"source":"osv","ecosystem":"Debian:13","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.21-1","1.21-2","1.21-3","1.24-1","1.26-1","1.27-1","1.27.1-1","1.28-1"]},{"source":"osv","ecosystem":"Debian:14","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28-1"}]}],"versions":["1.21-1","1.21-2","1.21-3","1.24-1","1.26-1","1.27-1","1.27.1-1"]},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.28-2.hum1"}]}]},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"crun-krun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.28-2.hum1"}]}]},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"crun-wasm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.28-2.hum1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Micro 6.1","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.15-slfo.1.1_2.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Micro 6.0","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.14-3.1"}]}]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.5+dfsg-1","0.10.6+dfsg-1","0.11+dfsg-1","0.12+dfsg-1","0.12.1+dfsg-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+dfsg-1","0.17+dfsg-1.1","0.17+dfsg-1.1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.5-1","1.11-1","1.11.1-1","1.12-1","1.13-1","1.14-1","1.14.1-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.20-1syncable1","1.21-1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.21-1ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.21-1ubuntu2","1.21-1ubuntu3"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"crun","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28-1.1"}]}]}],"products":[{"vendor":"containers","product":"crun"}],"references":[{"url":"https://github.com/containers/crun/security/advisories/GHSA-7vwr-4279-7gq5","tags":["x_refsource_CONFIRM","advisory","article","report"]},{"url":"https://github.com/containers/crun/releases/tag/1.28","tags":["x_refsource_MISC","web","article"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-47766","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47766","tags":["web","advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-47766","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47766.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-47766","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:54855","tags":["advisory"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-47766","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54855.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2516081","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-47766","tags":["advisory","report"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202622247-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1268302","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2026-47766","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-202622395-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-47766","tags":["report"]},{"url":"https://github.com/containers/crun/commit/c6f338ac2e26e216ab7820b91863a0b84e608097","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-47766","title":"crun follows rootfs /dev symlink while creating default devices","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T16:16:37.525Z","modified":"2026-08-14T16:32:20.537Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-61"],"updated_at":"2026-11-02T13:36:51.6229Z"}],"euvd":[{"id":"EUVD-2026-58714","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T16:16:37Z","modified":"2026-08-14T16:32:20Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:01:54.570698Z"}],"nvd":[{"id":"CVE-2026-47766","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T17:18:18.723Z","modified":"2026-09-18T20:09:01.757Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-61"],"updated_at":"2026-11-02T14:12:37.557758Z"}],"osv":[{"id":"ALPINE-CVE-2026-47766","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T17:18:18.723Z","modified":"2026-11-03T06:32:56.007744591Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-03T07:16:26.770911Z"},{"id":"CVE-2026-47766","title":"crun follows rootfs /dev symlink while creating default devices","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T16:16:37.525Z","modified":"2026-10-28T02:30:48.301038701Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-61"],"updated_at":"2026-11-02T15:45:06.231145Z"},{"id":"DEBIAN-CVE-2026-47766","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T17:18:18.723Z","modified":"2026-10-01T03:02:34.532464949Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"updated_at":"2026-11-02T15:45:56.444225Z"},{"id":"RHSA-2026:54855","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-10-20T10:11:16Z","modified":"2026-10-20T10:32:18.814857453Z","cvss":[{"version":"3.1","score":8.4,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.457353Z"},{"id":"UBUNTU-CVE-2026-47766","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T17:18:00Z","modified":"2026-10-17T13:00:19.80504427Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"AZL-95985","title":"CVE-2026-47766 affecting package crun 1.24-6","description":"crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs `/dev` directory without `O_NOFOLLOW`. If an OCI bundle contains `rootfs/dev` as a symlink and the bundle configuration does not mount `/dev`, crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named `ptmx` in the target directory was also replaced by crun's forced `ptmx -\u003e pts/ptmx` symlink. Version 1.28 fixes the issue.","status":"published","published":"2026-08-14T17:18:18Z","modified":"2026-11-05T05:36:30Z","updated_at":"2026-11-05T16:41:26.077208Z"},{"id":"BELL-CVE-2026-47766","status":"published","published":"2026-05-28T10:49:42.699266Z","modified":"2026-06-10T07:15:04.396294885Z","updated_at":"2026-11-02T15:28:24.391068Z"},{"id":"openSUSE-SU-2026:11030-1","title":"crun-1.28-1.1 on GA media","description":"These are all security issues fixed in the crun-1.28-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-15T00:00:00Z","modified":"2026-06-16T10:30:08.28701909Z","updated_at":"2026-11-02T16:58:38.95195Z"},{"id":"SUSE-SU-2026:22247-1","title":"Security update for crun","description":"This update for crun fixes the following issue\n\n- CVE-2026-47766: crun follows rootfs /dev symlink while creating default devices (bsc#1268302).\n","status":"published","published":"2026-06-22T07:17:14Z","modified":"2026-06-26T18:24:14.287839412Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"SUSE-SU-2026:22395-1","title":"Security update for crun","description":"This update for crun fixes the following issue\n\n- CVE-2026-47766: crun follows rootfs /dev symlink while creating default devices (bsc#1268302).\n","status":"published","published":"2026-06-24T09:15:22Z","modified":"2026-07-04T18:24:14.965219873Z","updated_at":"2026-11-02T15:54:03.080707Z"}]}}