{"id":"CVE-2023-39191","details":"An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.","modified":"2026-04-24T06:42:50.482295091Z","published":"2023-10-04T19:15:10.210Z","related":["SUSE-SU-2023:4343-1","SUSE-SU-2023:4375-1","SUSE-SU-2023:4414-1","SUSE-SU-2024:0986-1","SUSE-SU-2024:0995-1","SUSE-SU-2024:1023-1","SUSE-SU-2024:1039-1","SUSE-SU-2024:1045-1","SUSE-SU-2024:1097-1"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:6583"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0381"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0439"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:0448"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-39191"},{"type":"FIX","url":"https://www.zerodayinitiative.com/advisories/ZDI-CAN-19399/"},{"type":"FIX","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2226783"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-39191.json","unresolved_ranges":[{"events":[{"introduced":"5.19"},{"fixed":"6.3"}]},{"events":[{"introduced":"0"},{"last_affected":"38"}]},{"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:H/UI:N/S:C/C:H/I:H/A:H"}]}