{"id":"CVE-2021-4203","details":"A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.","modified":"2026-03-13T05:14:00.128738Z","published":"2022-03-25T19:15:09.833Z","related":["ALSA-2022:1988","SUSE-SU-2022:3264-1","SUSE-SU-2022:3265-1","SUSE-SU-2022:3274-1","SUSE-SU-2022:3282-1","SUSE-SU-2022:3291-1","SUSE-SU-2022:3408-1","SUSE-SU-2022:3422-1","SUSE-SU-2022:3450-1","SUSE-SU-2022:3609-1","SUSE-SU-2022:3809-1","SUSE-SU-2023:0634-1","SUSE-SU-2023:0747-1","SUSE-SU-2023:0768-1","SUSE-SU-2023:0852-1","SUSE-SU-2023:1848-1","SUSE-SU-2023:2232-1"],"references":[{"type":"WEB","url":"https://lore.kernel.org/netdev/20210929225750.2548112-1-eric.dumazet%40gmail.com/T/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20221111-0003/"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2036934"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814"},{"type":"FIX","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"FIX","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-4203.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.15"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-NA"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.15-rc3"}]},{"events":[{"introduced":"11.0.0"},{"last_affected":"11.70.2"}]},{"events":[{"introduced":"0"},{"last_affected":"22.1.3"}]},{"events":[{"introduced":"0"},{"last_affected":"22.1.1"}]},{"events":[{"introduced":"0"},{"last_affected":"22.2.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H"}]}