{"id":"CVE-2020-23856","aliases":["DEBIAN-CVE-2020-23856","EUVD-2020-16593","GHSA-h5qf-rf3c-vmj5","UBUNTU-CVE-2020-23856"],"status":"published","title":"Use-after-Free vulnerability in cflow 1.6 in the void call(char *name, int line) function at src...","description":"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 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List","Vendor Advisory","evidence","report"]},{"url":"https://github.com/yangjiageng/PoC/blob/master/PoC_cflow_uaf_parser_line1284","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-23856"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BLSXGFK2NYPCJMPHSHE3W56ZU3ZO6RD7/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZTTKZX274BVFZX7TMPEZG6UWL6UPMQF/"},{"url":"https://github.com/advisories/GHSA-h5qf-rf3c-vmj5"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-23856","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-23856","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-23856","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-23856","description":"Use-after-Free 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of service via the pointer variable caller-\u003ecallee.","status":"published","published":"2021-05-18T15:15:00Z","modified":"2026-10-17T12:55:52.327729506Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:23.905183Z"}]}}