{"id":"CVE-2021-39920","details":"NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file","modified":"2026-03-15T22:41:54.807859Z","published":"2021-11-18T19:15:08.333Z","related":["MGASA-2021-0518","SUSE-SU-2021:3938-1","openSUSE-SU-2021:1566-1","openSUSE-SU-2021:3938-1","openSUSE-SU-2024:11641-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202210-04"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-5019"},{"type":"ADVISORY","url":"https://www.wireshark.org/security/wnpa-sec-2021-15.html"},{"type":"ADVISORY","url":"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39920.json"},{"type":"REPORT","url":"https://gitlab.com/wireshark/wireshark/-/issues/17705"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/wireshark/wireshark","events":[{"introduced":"9733f173ea5e6255e8da208ef183210aa264d948"},{"fixed":"733b3a137c2ba8c8e517e5fb37bcc3030a43d603"}],"database_specific":{"versions":[{"introduced":"3.4.0"},{"fixed":"3.4.10"}]}}],"versions":["v3.4.0","v3.4.1","v3.4.10rc0","v3.4.1rc0","v3.4.2","v3.4.2rc0","v3.4.3","v3.4.3rc0","v3.4.4","v3.4.4rc0","v3.4.5","v3.4.5rc0","v3.4.6","v3.4.6rc0","v3.4.7","v3.4.7rc0","v3.4.8","v3.4.8rc0","v3.4.9","v3.4.9rc0","wireshark-3.4.0","wireshark-3.4.1","wireshark-3.4.2","wireshark-3.4.3","wireshark-3.4.4","wireshark-3.4.5","wireshark-3.4.6","wireshark-3.4.7","wireshark-3.4.8","wireshark-3.4.9"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"34"}]},{"events":[{"introduced":"0"},{"last_affected":"35"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39920.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}