{"id":"CVE-2023-6270","title":"Kernel: aoe: improper reference count leads to use-after-free vulnerability","summary":"A flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the stru…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-416"],"vendor":"Red Hat","product":"kernel","affected":["kernel","kernel","kernel-rt","kernel","kernel-rt","kernel","kernel-rt"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-10-22T13:48:09.407937Z"},"published":"2024-01-04","updated":"2026-10-29","sourceUpdated":"2026-10-29T08:13:42.280Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-6270","references":[{"url":"https://access.redhat.com/security/cve/CVE-2023-6270"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2256786","label":"RHBZ#2256786"}],"tags":["cve.org"],"epss":0.0041,"epssPercentile":0.35208,"ingestedAt":"2026-10-31T04:17:25.422Z","slug":"CVE-2023-6270","body":"## Overview\n\nA flaw was found in the ATA over Ethernet (AoE) driver in the Linux kernel. The aoecmd_cfg_pkts() function improperly updates the refcnt on `struct net_device`, and a use-after-free can be triggered by racing between the free on the struct and the access through the `skbtxq` global queue. This could lead to a denial of service condition or potential code execution.\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.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}