{"id":"CVE-2021-4155","details":"A data leak flaw was found in the way XFS_IOC_ALLOCSP IOCTL in the XFS filesystem allowed for size increase of files with unaligned size. A local attacker could use this flaw to leak data on the XFS filesystem otherwise not accessible to them.","modified":"2026-03-15T22:42:51.853846Z","published":"2022-08-24T16:15:09.607Z","related":["ALSA-2022:0188","MGASA-2022-0021","MGASA-2022-0022","SUSE-SU-2022:0362-1","SUSE-SU-2022:0477-1","SUSE-SU-2022:14905-1","SUSE-SU-2022:3264-1","SUSE-SU-2022:3450-1","SUSE-SU-2022:3609-1","SUSE-SU-2022:3809-1"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2021-4155"},{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-4155"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2034813"},{"type":"FIX","url":"https://www.openwall.com/lists/oss-security/2022/01/10/1"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=983d8e60f50806f90534cc5373d0ce867e5aaf79"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.16"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4155.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:N"}]}