{"id":"CVE-2020-23856","details":"Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src/parser.c, which could cause a denial of service via the pointer variable caller-\u003ecallee.","modified":"2026-03-14T10:21:03.887658Z","published":"2021-05-18T15:15:07.877Z","references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/"},{"type":"EVIDENCE","url":"https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284"},{"type":"EVIDENCE","url":"https://lists.gnu.org/archive/html/bug-cflow/2020-07/msg00000.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-23856.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"1.6"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}