{"id":"CVE-2020-29534","details":"An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.","modified":"2026-03-13T00:40:28.412897Z","published":"2020-12-03T20:15:11.947Z","related":["MGASA-2021-0030","MGASA-2021-0031"],"references":[{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f2122045b946241a9e549c2a76cea54fa58a7ff"},{"type":"FIX","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2089"},{"type":"FIX","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"5.1"},{"fixed":"5.8.18"}]},{"events":[{"introduced":"5.9.0"},{"fixed":"5.9.3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.10-rc1"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-29534.json"}}],"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"}]}