{"id":"CVE-2023-39198","title":"Kernel: qxl: race condition leading to use-after-free in qxl_mode_dumb_create()","summary":"A race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. Th…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-416"],"vendor":"Red Hat","product":"kernel-rt","affected":["kernel-rt (all versions)","kernel (all versions)","kernel (all versions)","kernel (all versions)","kernel","kernel","kernel-rt","kernel-rt (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2024-08-01T03:55:52.570322Z"},"published":"2023-11-09","updated":"2026-11-07","sourceUpdated":"2026-11-07T05:01:34.435Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-39198","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-2023-39198"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2218332","label":"RHBZ#2218332"}],"tags":["cve.org"],"epss":0.00435,"epssPercentile":0.37967,"ingestedAt":"2026-11-07T05:10:28.779Z","slug":"CVE-2023-39198","body":"## Overview\n\nA race condition was found in the QXL driver in the Linux kernel. The qxl_mode_dumb_create() function dereferences the qobj returned by the qxl_gem_object_create_with_handle(), but the handle is the only one holding a reference to it. This flaw allows an attacker to guess the returned handle value and trigger a use-after-free issue, potentially leading to a denial of service or privilege escalation.\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`\n- `kernel-rt (all versions)`\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":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}