{"id":"CVE-2023-6176","title":"Kernel: local dos vulnerability in scatterwalk_copychunks","summary":"A null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific socket configuration, which could allo…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Red Hat","product":"kernel-rt","affected":["kernel-rt (all versions)","kernel (all versions)","kernel (all versions)","kernel (all versions)","kernel","kernel","kernel-rt (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2025-10-17T17:18:19.685968Z"},"published":"2023-11-16","updated":"2026-11-06","sourceUpdated":"2026-11-06T13:40:17.549Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-6176","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:2394","label":"RHSA-2024:2394"},{"url":"https://access.redhat.com/errata/RHSA-2024:2950","label":"RHSA-2024:2950"},{"url":"https://access.redhat.com/errata/RHSA-2024:3138","label":"RHSA-2024:3138"},{"url":"https://access.redhat.com/security/cve/CVE-2023-6176"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2219359","label":"RHBZ#2219359"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cfaa80c91f6f99b9342b6557f0f0e1143e434066"}],"tags":["cve.org"],"epss":0.00251,"epssPercentile":0.16583,"ingestedAt":"2026-11-06T13:52:17.104Z","slug":"CVE-2023-6176","body":"## Overview\n\nA null pointer dereference flaw was found in the Linux kernel API for the cryptographic algorithm scatterwalk functionality. This issue occurs when a user constructs a malicious packet with specific socket configuration, which could allow a local user to crash the system or escalate their privileges on the system.\n\n## Affected\n\n- `kernel-rt (all versions)`\n- `kernel (all versions)`\n- `kernel (all versions)`\n- `kernel (all versions)`\n- `kernel`\n- `kernel`\n- `kernel-rt (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}