{"id":"CVE-2021-3506","details":"An out-of-bounds (OOB) memory access flaw was found in fs/f2fs/node.c in the f2fs module in the Linux kernel in versions before 5.12.0-rc4. A bounds check failure allows a local attacker to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.","modified":"2026-03-15T22:41:00.849420Z","published":"2021-04-19T22:15:13.110Z","related":["MGASA-2021-0214","MGASA-2021-0215"],"references":[{"type":"WEB","url":"https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg2520013.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210611-0007/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1944298"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2021/05/08/1"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2021/03/28/2"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.12"}]},{"events":[{"introduced":"0"},{"last_affected":"5.12-NA"}]},{"events":[{"introduced":"0"},{"last_affected":"5.12-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.12-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.12-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-3506.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:N/A:H"}]}