{"id":"UBUNTU-CVE-2021-28831","details":"decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.","modified":"2026-01-30T02:20:50.152483Z","published":"2021-03-19T05:15:00Z","related":["USN-5179-1","USN-5179-2","USN-6335-1"],"upstream":["CVE-2021-28831"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-28831"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5179-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5179-2"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6335-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-28831"}],"affected":[{"package":{"name":"busybox","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/busybox@1:1.21.0-1ubuntu1.4+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.21.0-1ubuntu1.4+esm1"}]}],"versions":["1:1.20.0-8.1ubuntu1","1:1.20.0-9ubuntu1","1:1.20.0-9ubuntu2","1:1.21.0-1ubuntu1","1:1.21.0-1ubuntu1.4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro 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