{"schema_version":"1.7.5","id":"CVE-2021-30465","published":"2021-05-27T13:15:08.077Z","modified":"2026-07-08T05:59:23.301451582Z","aliases":["GHSA-c3xm-pvg7-gh7r","GO-2022-0914"],"related":["ALSA-2021:2291","ALSA-2021:2370","ALSA-2021:2371","CGA-qqf4-pjrx-g369","SUSE-SU-2021:1885-1","SUSE-SU-2021:1954-1","SUSE-SU-2021:3336-1","SUSE-SU-2021:3506-1","openSUSE-SU-2021:0878-1","openSUSE-SU-2021:1404-1","openSUSE-SU-2021:1954-1","openSUSE-SU-2021:3506-1","openSUSE-SU-2024:11358-1","openSUSE-SU-2025:15424-1"],"details":"runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/opencontainers/runc","events":[{"introduced":"0"},{"last_affected":"baf6536d6259209c3edfa2b22237af82942d3dfa"},{"introduced":"04f275d4601ca7e5ff9460cec7f65e8dd15443ec"},{"last_affected":"2c7861bc5e1b3e756392236553ec14a78a09f8bf"},{"fixed":"0ca91f44f1664da834bc61115a849b56d22f595f"}],"database_specific":{"cpe":["cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc1:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc10:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc90:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc2:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc3:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc4:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc5:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc6:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc7:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc8:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc9:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc91:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc92:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc93:*:*:*:*:*:*","cpe:2.3:a:linuxfoundation:runc:1.0.0:rc94:*:*:*:*:*:*"],"extracted_events":[{"introduced":"0"},{"last_affected":"0.1.1"},{"introduced":"1.0.0-rc1"},{"last_affected":"1.0.0-rc1"},{"introduced":"1.0.0-rc10"},{"last_affected":"1.0.0-rc10"},{"introduced":"1.0.0-rc90"},{"last_affected":"1.0.0-rc90"},{"introduced":"1.0.0-rc2"},{"last_affected":"1.0.0-rc2"},{"introduced":"1.0.0-rc3"},{"last_affected":"1.0.0-rc3"},{"introduced":"1.0.0-rc4"},{"last_affected":"1.0.0-rc4"},{"introduced":"1.0.0-rc5"},{"last_affected":"1.0.0-rc5"},{"introduced":"1.0.0-rc6"},{"last_affected":"1.0.0-rc6"},{"introduced":"1.0.0-rc7"},{"last_affected":"1.0.0-rc7"},{"introduced":"1.0.0-rc8"},{"last_affected":"1.0.0-rc8"},{"introduced":"1.0.0-rc9"},{"last_affected":"1.0.0-rc9"},{"introduced":"1.0.0-rc91"},{"last_affected":"1.0.0-rc91"},{"introduced":"1.0.0-rc92"},{"last_affected":"1.0.0-rc92"},{"introduced":"1.0.0-rc93"},{"last_affected":"1.0.0-rc93"},{"introduced":"1.0.0-rc94"},{"last_affected":"1.0.0-rc94"}],"source":["CPE_RANGE","CPE_STRING","REFERENCES"]}}],"versions":["1.0.0-rc1","1.0.0-rc10","1.0.0-rc2","1.0.0-rc3","1.0.0-rc4","1.0.0-rc5","1.0.0-rc6","1.0.0-rc7","1.0.0-rc8","1.0.0-rc9","1.0.0-rc91","1.0.0-rc92","1.0.0-rc93","1.0.0-rc94","v1.0.0-rc94","v1.0.0-rc2","v0.1.1","v0.1.0","v0.0.8","v0.0.7","v0.0.6","v0.0.5","v0.0.4","v0.0.2","v0.0.3","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-30465.json"}}],"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00023.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/35ZW6NBZSBH5PWIT7JU4HXOXGFVDCOHH/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4HOARVIT47RULTTFWAU7XBG4WY6TDDHV/"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/05/19/2"},{"type":"ADVISORY","url":"https://github.com/opencontainers/runc/releases"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202107-26"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210708-0003/"},{"type":"REPORT","url":"https://bugzilla.opensuse.org/show_bug.cgi?id=1185405"},{"type":"FIX","url":"https://github.com/opencontainers/runc/commit/0ca91f44f1664da834bc61115a849b56d22f595f"},{"type":"FIX","url":"https://github.com/opencontainers/runc/security/advisories/GHSA-c3xm-pvg7-gh7r"}],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"33"},{"last_affected":"33"},{"introduced":"34"},{"last_affected":"34"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora"}]},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}]}