{"id":"CVE-2020-25643","details":"A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.","modified":"2026-04-16T04:34:18.344087439Z","published":"2020-10-06T14:15:12.683Z","related":["ALSA-2021:1578","SUSE-SU-2020:2904-1","SUSE-SU-2020:2905-1","SUSE-SU-2020:2906-1","SUSE-SU-2020:2907-1","SUSE-SU-2020:2980-1","SUSE-SU-2020:2999-1","SUSE-SU-2020:3014-1","SUSE-SU-2020:3230-1","SUSE-SU-2020:3491-1","SUSE-SU-2020:3501-1","SUSE-SU-2020:3503-1","SUSE-SU-2020:3532-1","SUSE-SU-2020:3544-1","SUSE-SU-2021:14630-1","openSUSE-SU-2020:1655-1","openSUSE-SU-2020:1698-1","openSUSE-SU-2020:2112-1","openSUSE-SU-2021:0242-1"],"references":[{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20201103-0002/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4774"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html"},{"type":"ADVISORY","url":"https://www.starwindsoftware.com/security/sw-20210325-0002/"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1879981"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git","events":[{"introduced":"0"},{"fixed":"a1b8638ba1320e6684aa98233c15255eb803fac7"},{"fixed":"66d42ed8b25b64eb63111a2b8582c5afc8bf1105"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"5.9-rc7"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-25643.json","unresolved_ranges":[{"events":[{"introduced":"2.6.29"},{"fixed":"4.4.238"}]},{"events":[{"introduced":"4.5"},{"fixed":"4.9.238"}]},{"events":[{"introduced":"4.10"},{"fixed":"4.14.200"}]},{"events":[{"introduced":"4.15"},{"fixed":"4.19.148"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.68"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.8.12"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc5"}]},{"events":[{"introduced":"0"},{"last_affected":"5.9.0-rc6"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"15.1"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"15.2"}]},{"events":[{"introduced":"0"},{"last_affected":"v8-build12533"}]},{"events":[{"introduced":"0"},{"last_affected":"v8-build12658"}]},{"events":[{"introduced":"0"},{"last_affected":"v8-build12859"}]},{"events":[{"introduced":"0"},{"last_affected":"v8-build13170"}]},{"events":[{"introduced":"0"},{"last_affected":"v8-build13586"}]},{"events":[{"introduced":"0"},{"last_affected":"v8-build13861"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}