{"id":"CVE-2019-6974","details":"In the Linux kernel before 4.20.8, kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandles reference counting because of a race condition, leading to a use-after-free.","modified":"2026-04-16T04:31:29.277331580Z","published":"2019-02-15T15:29:00.250Z","related":["SUSE-SU-2019:0541-1","SUSE-SU-2019:0672-1","SUSE-SU-2019:0683-1","SUSE-SU-2019:0709-1","SUSE-SU-2019:0722-1","SUSE-SU-2019:0726-1","SUSE-SU-2019:0740-1","SUSE-SU-2019:0745-1","SUSE-SU-2019:0754-1","SUSE-SU-2019:0765-1","SUSE-SU-2019:0767-1","SUSE-SU-2019:0784-1","SUSE-SU-2019:0785-1","SUSE-SU-2019:0828-1","SUSE-SU-2019:0845-1","SUSE-SU-2019:0901-1","SUSE-SU-2019:1289-1","openSUSE-SU-2019:0203-1","openSUSE-SU-2024:10728-1","openSUSE-SU-2024:13704-1"],"references":[{"type":"WEB","url":"https://support.f5.com/csp/article/K11186236?utm_source=f5support&amp%3Butm_medium=RSS"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3930-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3931-1/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHBA-2019:0959"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3967"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2020:0103"},{"type":"ADVISORY","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.99"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3931-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3932-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3933-2/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html"},{"type":"ADVISORY","url":"https://support.f5.com/csp/article/K11186236"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0818"},{"type":"ADVISORY","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.156"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3930-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3932-2/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3933-1/"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/107127"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0833"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2809"},{"type":"ADVISORY","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.21"},{"type":"ADVISORY","url":"https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.20.8"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cfa39381173d5f969daf43582c95ad679189cbc9"},{"type":"FIX","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=1765"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/cfa39381173d5f969daf43582c95ad679189cbc9"},{"type":"EVIDENCE","url":"https://www.exploit-db.com/exploits/46388/"}],"affected":[{"ranges":[{"type":"GIT","repo":"http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git","events":[{"introduced":"0"},{"last_affected":"6e4664525b1db28f8c4e1130957f70a94c19213e"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"3.11"}]}},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git","events":[{"introduced":"0"},{"fixed":"cfa39381173d5f969daf43582c95ad679189cbc9"}]},{"type":"GIT","repo":"https://github.com/torvalds/linux","events":[{"introduced":"0"},{"fixed":"cfa39381173d5f969daf43582c95ad679189cbc9"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6974.json","unresolved_ranges":[{"events":[{"introduced":"3.10"},{"fixed":"3.16.64"}]},{"events":[{"introduced":"3.17"},{"fixed":"3.18.136"}]},{"events":[{"introduced":"3.19"},{"fixed":"4.4.176"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.156"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.99"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.21"}]},{"events":[{"introduced":"4.20"},{"fixed":"4.20.8"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.04"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.10"}]},{"events":[{"introduced":"13.0.0"},{"last_affected":"13.1.1"}]},{"events":[{"introduced":"14.0.0"},{"last_affected":"14.1.0"}]},{"events":[{"introduced":"15.0.0"},{"fixed":"15.1.0"}]},{"events":[{"introduced":"13.0.0"},{"last_affected":"13.1.1"}]},{"events":[{"introduced":"14.0.0"},{"last_affected":"14.1.0"}]},{"events":[{"introduced":"15.0.0"},{"fixed":"15.1.0"}]},{"events":[{"introduced":"13.0.0"},{"last_affected":"13.1.1"}]},{"events":[{"introduced":"14.0.0"},{"last_affected":"14.1.0"}]},{"events":[{"introduced":"15.0.0"},{"fixed":"15.1.0"}]},{"events":[{"introduced":"13.0.0"},{"last_affected":"13.1.1"}]},{"events":[{"introduced":"14.0.0"},{"last_affected":"14.1.0"}]},{"events":[{"introduced":"15.0.0"},{"fixed":"15.1.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