{"id":"CVE-2023-33952","title":"Kernel: vmwgfx: double free within the handling of vmw_buffer_object objects","summary":"A double-free vulnerability was found in handling vmw_buffer_object objects in the vmwgfx driver in the Linux kernel. This issue occurs due to the lack of validating the existence of an object prior to performing further free operations …","severity":"medium","cvss":6.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-415"],"vendor":"Red Hat","product":"kernel-rt","affected":["kernel-rt (all versions)","kernel (all versions)","kernel (all versions)","kernel (all versions)","kernel (all versions)","kernel (all versions)","kernel-rt (all versions)","kernel","kernel","kernel-rt","kernel-rt (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2024-05-10T04:00:08.235929Z"},"published":"2023-07-24","updated":"2026-11-06","sourceUpdated":"2026-11-06T20:24:51.099Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-33952","references":[{"url":"https://access.redhat.com/errata/RHSA-2023:6583","label":"RHSA-2023:6583"},{"url":"https://access.redhat.com/errata/RHSA-2023:6901","label":"RHSA-2023:6901"},{"url":"https://access.redhat.com/errata/RHSA-2023:7077","label":"RHSA-2023:7077"},{"url":"https://access.redhat.com/errata/RHSA-2024:1404","label":"RHSA-2024:1404"},{"url":"https://access.redhat.com/errata/RHSA-2024:4823","label":"RHSA-2024:4823"},{"url":"https://access.redhat.com/errata/RHSA-2024:4831","label":"RHSA-2024:4831"},{"url":"https://access.redhat.com/security/cve/CVE-2023-33952"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2218212","label":"RHBZ#2218212"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-CAN-20292"}],"tags":["cve.org"],"epss":0.00465,"epssPercentile":0.40506,"zeroDay":true,"ingestedAt":"2026-11-06T21:04:04.250Z","slug":"CVE-2023-33952","body":"## Overview\n\nA double-free vulnerability was found in handling vmw_buffer_object objects in the vmwgfx driver in the Linux kernel. This issue occurs due to the lack of validating the existence of an object prior to performing further free operations on the object, which may allow a local privileged user to escalate privileges and execute code in the context of the kernel.\n\n## Affected\n\n- `kernel-rt (all versions)`\n- `kernel (all versions)`\n- `kernel (all versions)`\n- `kernel (all versions)`\n- `kernel (all versions)`\n- `kernel (all versions)`\n- `kernel-rt (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\nThis flaw can be mitigated by preventing the affected `vmwgfx` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278.","depth":"midnight","depthScore":62,"depthScoreParts":{"impact":36.9,"likelihood":0.1,"exploitation":25,"ransomware":0},"changes":[]}