{"id":"CVE-2020-1983","details":"A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.","modified":"2026-04-02T04:50:45.735782Z","published":"2020-04-22T20:15:11.480Z","related":["ALSA-2020:3053","ALSA-2020:4676","SUSE-SU-2020:1197-1","SUSE-SU-2020:14396-1","SUSE-SU-2020:1501-1","SUSE-SU-2020:1502-1","SUSE-SU-2020:1514-1","SUSE-SU-2020:1516-1","SUSE-SU-2020:1523-1","SUSE-SU-2020:1526-1","SUSE-SU-2020:1538-1","SUSE-SU-2021:14706-1","openSUSE-SU-2020:0636-1","openSUSE-SU-2020:0756-1","openSUSE-SU-2024:10991-1","openSUSE-SU-2024:11287-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWFD4MWV3YWIHVHSA2F7FKOLJFL4PHOX/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4372-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4665"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html"},{"type":"FIX","url":"https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c25129660e81df04"},{"type":"EVIDENCE","url":"https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.freedesktop.org/slirp/libslirp","events":[{"introduced":"0"},{"last_affected":"daba14c3416fa9641ab4453a9a11e7f8bde08875"},{"fixed":"9ac0371bb8c0a40f5d9f82a1c25129660e81df04"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"4.2.0"}]}}],"versions":["release_0_10_0","release_0_10_1","release_0_10_2","release_0_6_0","release_0_6_1","release_0_7_0","release_0_7_1","release_0_8_1","release_0_8_2","release_0_9_0","release_0_9_1","v0.10.0","v0.10.1","v0.10.2","v0.10.3","v0.10.4","v0.10.5","v0.10.6","v0.11.0-rc0","v0.12.0","v0.12.0-rc0","v0.12.0-rc1","v0.12.0-rc2","v0.12.1","v0.13.0","v0.13.0-rc0","v0.13.0-rc1","v0.13.0-rc2","v0.13.0-rc3","v0.14.0-rc0","v0.14.0-rc1","v0.15.0","v0.15.0-rc0","v0.15.0-rc1","v0.15.0-rc2","v0.15.1","v0.6.0","v0.6.1","v0.7.0","v0.7.1","v0.8.1","v0.8.2","v0.9.0","v0.9.1","v1.0","v1.0-rc0","v1.0-rc1","v1.0-rc2","v1.0-rc3","v1.0-rc4","v1.0.1","v1.1-rc0","v1.1-rc1","v1.1-rc2","v1.1.0","v1.1.0-rc2","v1.1.0-rc3","v1.1.0-rc4","v1.1.1","v1.1.2","v1.2.0","v1.2.0-rc0","v1.2.0-rc1","v1.2.0-rc2","v1.2.0-rc3","v1.3.0","v1.3.0-rc0","v1.3.0-rc1","v1.3.0-rc2","v1.3.1","v1.4.0","v1.4.0-rc0","v1.4.0-rc1","v1.4.0-rc2","v1.5.0","v1.5.0-rc0","v1.5.0-rc1","v1.5.0-rc2","v1.5.0-rc3","v1.5.1","v1.5.2","v1.5.3","v1.6.0","v1.6.0-rc0","v1.6.0-rc1","v1.6.0-rc2","v1.6.0-rc3","v1.6.1","v1.6.2","v1.7.0","v1.7.0-rc0","v1.7.0-rc1","v1.7.0-rc2","v1.7.1","v1.7.2","v2.0.0","v2.0.0-rc0","v2.0.0-rc1","v2.0.0-rc2","v2.0.0-rc3","v2.0.1","v2.0.2","v2.1.0","v2.1.0-rc0","v2.1.0-rc1","v2.1.0-rc2","v2.1.0-rc3","v2.1.0-rc4","v2.1.0-rc5","v2.1.1","v2.10.0","v2.10.0-rc0","v2.10.0-rc1","v2.10.0-rc2","v2.10.0-rc3","v2.10.0-rc4","v2.11.0","v2.11.0-rc0","v2.11.0-rc1","v2.11.0-rc2","v2.11.0-rc3","v2.11.0-rc4","v2.11.0-rc5","v2.11.1","v2.11.2","v2.12.0","v2.12.0-rc0","v2.12.0-rc1","v2.12.0-rc2","v2.12.0-rc3","v2.12.0-rc4","v2.12.1","v2.2.0","v2.2.0-rc0","v2.2.0-rc1","v2.2.0-rc2","v2.2.0-rc3","v2.2.0-rc4","v2.2.0-rc5","v2.2.1","v2.3.0","v2.3.0-rc0","v2.3.0-rc1","v2.3.0-rc2","v2.3.0-rc3","v2.3.0-rc4","v2.3.1","v2.4.0","v2.4.0-rc0","v2.4.0-rc1","v2.4.0-rc2","v2.4.0-rc3","v2.4.0-rc4","v2.4.0.1","v2.5.0","v2.5.0-rc0","v2.5.0-rc1","v2.5.0-rc2","v2.5.0-rc3","v2.5.0-rc4","v2.5.1","v2.5.1.1","v2.6.0","v2.6.0-rc0","v2.6.0-rc1","v2.6.0-rc2","v2.6.0-rc3","v2.6.0-rc4","v2.6.0-rc5","v2.7.0","v2.7.0-rc0","v2.7.0-rc1","v2.7.0-rc2","v2.7.0-rc3","v2.7.0-rc4","v2.7.0-rc5","v2.8.0","v2.8.0-rc0","v2.8.0-rc1","v2.8.0-rc2","v2.8.0-rc3","v2.8.0-rc4","v2.8.1","v2.8.1.1","v2.9.0","v2.9.0-rc0","v2.9.0-rc1","v2.9.0-rc2","v2.9.0-rc3","v2.9.0-rc4","v2.9.0-rc5","v3.0.0","v3.0.0-rc0","v3.0.0-rc1","v3.0.0-rc2","v3.0.0-rc3","v3.0.0-rc4","v3.1.0","v3.1.0-rc0","v3.1.0-rc1","v3.1.0-rc2","v3.1.0-rc3","v3.1.0-rc4","v3.1.0-rc5","v4.0.0","v4.0.0-rc0","v4.1.0","v4.2.0"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"31"}]},{"events":[{"introduced":"0"},{"last_affected":"32"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"19.10"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1983.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"}]}