{"id":"CVE-2023-3812","details":"An out-of-bounds memory access flaw was found in the Linux kernel’s TUN/TAP device driver functionality in how a user generates a malicious (too big) networking packet when napi frags is enabled. This flaw allows a local user to crash or potentially escalate their privileges on the system.","modified":"2026-03-15T21:45:08.086493Z","published":"2023-07-24T16:15:13.337Z","related":["ALSA-2023:7549","SUSE-SU-2023:3171-1","SUSE-SU-2023:3172-1","SUSE-SU-2023:3180-1","SUSE-SU-2023:3182-1","SUSE-SU-2023:3302-1","SUSE-SU-2023:3318-1","SUSE-SU-2023:3390-1","SUSE-SU-2023:3391-1","SUSE-SU-2023:3421-1","SUSE-SU-2023:3601-1","SUSE-SU-2023:3680-1","SUSE-SU-2023:3681-1","SUSE-SU-2023:3705-1","SUSE-SU-2023:3748-1","SUSE-SU-2023:3749-1","SUSE-SU-2023:3768-1","SUSE-SU-2023:3772-1","SUSE-SU-2023:3783-1","SUSE-SU-2023:3786-1","SUSE-SU-2023:3788-1","SUSE-SU-2023:3809-1","SUSE-SU-2023:3811-1","SUSE-SU-2023:3812-1","SUSE-SU-2023:3838-1","SUSE-SU-2023:3844-1","SUSE-SU-2023:3846-1","SUSE-SU-2023:3889-1","SUSE-SU-2023:3892-1","SUSE-SU-2023:3893-1","SUSE-SU-2023:3928-1"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7370"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7382"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7418"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7549"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0340"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0378"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:2008"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:6813"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7389"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7548"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0461"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0562"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0563"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0575"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1961"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:6799"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7554"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0554"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0593"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-3812"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7379"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:7411"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0412"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:2006"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=363a5328f4b0"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2224048"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3812.json","unresolved_ranges":[{"events":[{"introduced":"4.15"},{"fixed":"4.19.265"}]},{"events":[{"introduced":"4.20"},{"fixed":"5.4.224"}]},{"events":[{"introduced":"5.5"},{"fixed":"5.10.154"}]},{"events":[{"introduced":"5.11"},{"fixed":"5.15.78"}]},{"events":[{"introduced":"5.16"},{"fixed":"6.0.8"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}