{"id":"CVE-2020-14309","details":"There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.","modified":"2026-03-13T00:25:46.757484Z","published":"2020-07-30T13:15:10.987Z","related":["MGASA-2021-0315","SUSE-SU-2020:14440-1","SUSE-SU-2020:2073-1","SUSE-SU-2020:2074-1","SUSE-SU-2020:2076-1","SUSE-SU-2020:2077-1","SUSE-SU-2020:2078-1","SUSE-SU-2020:2079-1","openSUSE-SU-2020:1168-1","openSUSE-SU-2020:1169-1"],"references":[{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202104-05"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20200731-0008/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4432-1/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1852022"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-14309.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.06"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}