{"id":"DEBIAN-CVE-2021-33643","details":"An attacker who submits a crafted tar file with size in header struct being 0 may be able to trigger an calling of malloc(0) for a variable gnu_longlink, causing an out-of-bounds read.","modified":"2026-09-15T09:00:50.225862862Z","published":"2022-08-10T20:15:20.450Z","upstream":["CVE-2021-33643"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-33643"}],"affected":[{"package":{"name":"libtar","ecosystem":"Debian:12","purl":"pkg:deb/debian/libtar?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.20-8+deb12u1"}]}],"versions":["1.2.20-8","1.2.20-8+deb12u1~deb11u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-33643.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"}]}