{"id":"CVE-2021-30501","details":"An assertion abort was found in upx MemBuffer::alloc() in mem.cpp, in version UPX 4.0.0. The flow allows attackers to cause a denial of service (abort) via a crafted file.","modified":"2026-07-08T05:59:11.690175192Z","published":"2021-05-27T00:15:08.527Z","related":["openSUSE-SU-2023:0088-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"33"},{"last_affected":"33"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"]},{"vendor_product":"redhat:enterprise_linux","cpes":["cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.0"},{"last_affected":"7.0"}],"source":"CPE_STRING"}]},"references":[{"type":"REPORT","url":"https://github.com/upx/upx/issues/486"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1948696"},{"type":"FIX","url":"https://github.com/upx/upx/commit/28e761cd42211dfe0124b7a29b2f74730f453e46"},{"type":"FIX","url":"https://github.com/upx/upx/pull/487"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/upx/upx","events":[{"introduced":"69ca635c4c0ba474e9ca583dbb42e3d028c4533a"},{"last_affected":"69ca635c4c0ba474e9ca583dbb42e3d028c4533a"},{"fixed":"28e761cd42211dfe0124b7a29b2f74730f453e46"}],"database_specific":{"extracted_events":[{"introduced":"4.0.0"},{"last_affected":"4.0.0"}],"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:upx:upx:4.0.0:*:*:*:*:*:*:*"}}],"versions":["4.0.0","v4.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-30501.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}