{"id":"CVE-2023-4194","details":"A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 (\"tun: tun_chr_open(): correctly initialize socket uid\"), - 66b2c338adce (\"tap: tap_open(): correctly initialize socket uid\"), pass \"inode-\u003ei_uid\" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.","modified":"2026-03-15T22:47:21.476770Z","published":"2023-08-07T14:15:11.743Z","related":["SUSE-SU-2023:3390-1","SUSE-SU-2023:3392-1","SUSE-SU-2023:3599-1","SUSE-SU-2023:3599-2","SUSE-SU-2023:3600-1","SUSE-SU-2023:3600-2","SUSE-SU-2023:3601-1","SUSE-SU-2023:3656-1","SUSE-SU-2023:3681-1","SUSE-SU-2023:3682-1","SUSE-SU-2023:3684-1","SUSE-SU-2023:3705-1","SUSE-SU-2023:3785-1","SUSE-SU-2023:3964-1","SUSE-SU-2023:3969-1","SUSE-SU-2023:3971-1","SUSE-SU-2023:3988-1","openSUSE-SU-2024:13145-1","openSUSE-SU-2024:13704-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q/"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20231027-0002/"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-4194"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5480"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5492"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:6583"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2229498"},{"type":"FIX","url":"https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/"},{"type":"FIX","url":"https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/"},{"type":"FIX","url":"https://lore.kernel.org/all/20230731164237.48365-3-lersek@redhat.com/"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"6.4"}]},{"events":[{"introduced":"0"},{"last_affected":"6.5-rc1"}]},{"events":[{"introduced":"0"},{"last_affected":"6.5-rc2"}]},{"events":[{"introduced":"0"},{"last_affected":"6.5-rc3"}]},{"events":[{"introduced":"0"},{"last_affected":"6.5-rc4"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"37"}]},{"events":[{"introduced":"0"},{"last_affected":"38"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]},{"events":[{"introduced":"0"},{"last_affected":"12.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-4194.json"}}],"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:H/A:N"}]}