{"id":"CVE-2023-6238","details":"A buffer overflow vulnerability was found in the NVM Express (NVMe) driver in the Linux kernel. Only privileged user could specify a small meta buffer and let the device perform larger Direct Memory Access (DMA) into the same buffer, overwriting unrelated kernel memory, causing random kernel crashes and memory corruption.","modified":"2026-03-13T07:50:41.019902Z","published":"2023-11-21T21:15:09.273Z","related":["CGA-3vcx-q795-mc44","SUSE-SU-2024:2135-1","SUSE-SU-2024:2203-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"references":[{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-6238"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2250834"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"38"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-6238.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}