{"id":"CVE-2023-0266","details":"A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e","aliases":["A-265303544","PUB-A-265303544"],"modified":"2026-04-16T00:06:23.416929724Z","published":"2023-01-30T14:15:10.500Z","related":["ALSA-2023:1469","ALSA-2023:1470","ALSA-2023:1566","ALSA-2023:1584","SUSE-SU-2023:0152-1","SUSE-SU-2023:0394-1","SUSE-SU-2023:0406-1","SUSE-SU-2023:0433-1","SUSE-SU-2023:0485-1","SUSE-SU-2023:0488-1","SUSE-SU-2023:0618-1","SUSE-SU-2023:0634-1","SUSE-SU-2023:0779-1","SUSE-SU-2023:1576-1","SUSE-SU-2023:1591-1","SUSE-SU-2023:1592-1","SUSE-SU-2023:1595-1","SUSE-SU-2023:1602-1","SUSE-SU-2023:1619-1","SUSE-SU-2023:1639-1","SUSE-SU-2023:1640-1","SUSE-SU-2023:1647-1","SUSE-SU-2023:1649-1","SUSE-SU-2023:1653-1","SUSE-SU-2023:1708-1"],"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-0266"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/alsa-pcm-move-rwsem-lock-inside-snd_ctl_elem_read-to-prevent-uaf.patch?id=72783cf35e6c55bca84c4bb7b776c58152856fd4"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/56b88b50565cd8b946a2d00b0c83927b7ebb055e"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/becf9e5d553c2389d857a3c178ce80fdb34a02e1"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"4.14"},{"fixed":"4.14.303"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.270"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.229"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.163"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.15.88"}]},{"events":[{"introduced":"5.16"},{"fixed":"6.1.6"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-0266.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}