{"id":"CVE-2023-3106","title":"Kernel: netlink socket crash (null pointer deref) in netlink_dump function","summary":"A NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can caus…","severity":"medium","cvss":6.6,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H","cvssSource":"cna","cwe":["CWE-476"],"vendor":"Red Hat","product":"kernel","affected":["kernel","kernel","kernel-rt","kernel","kernel-rt","kernel","kernel-rt"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-02-15T17:02:08.460942Z"},"published":"2023-07-12","updated":"2026-11-07","sourceUpdated":"2026-11-07T05:01:45.352Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-3106","references":[{"url":"https://access.redhat.com/security/cve/CVE-2023-3106"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2221501","label":"RHBZ#2221501"},{"url":"https://github.com/torvalds/linux/commit/1ba5bf993c6a3142e18e68ea6452b347f9cb5635"}],"tags":["cve.org"],"epss":0.003,"epssPercentile":0.22805,"ingestedAt":"2026-11-07T05:10:28.777Z","slug":"CVE-2023-3106","body":"## Overview\n\nA NULL pointer dereference vulnerability was found in netlink_dump. This issue can occur when the Netlink socket receives the message(sendmsg) for the XFRM_MSG_GETSA, XFRM_MSG_GETPOLICY type message, and the DUMP flag is set and can cause a denial of service or possibly another unspecified impact. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although it is unlikely.\n\n## Affected\n\n- `kernel`\n- `kernel`\n- `kernel-rt`\n- `kernel`\n- `kernel-rt`\n- `kernel`\n- `kernel-rt`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":36.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}