{"id":"CVE-2021-41073","details":"loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/\u003cpid\u003e/maps for exploitation.","modified":"2026-04-16T04:41:59.184377848Z","published":"2021-09-19T17:15:07.227Z","references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J7KSMIOQ4377CVTHMWNGNCWHMCRFRP2T/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAP4TXEZ7J4EZQMQW5SIJMWXG7WZT3F7/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4978"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/09/18/2"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/06/04/4"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20211014-0003/"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=16c8d2df7ec0eed31b7d3b61cb13206a7fb930cc"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41073.json","unresolved_ranges":[{"events":[{"introduced":"5.10"},{"fixed":"5.10.68"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.14.7"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}