{"id":"CVE-2024-9632","title":"Xorg-x11-server: tigervnc: heap-based buffer overflow privilege escalation vulnerability","summary":"A flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or loc…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-122"],"vendor":"Red Hat","product":"xorg-server","affected":["xorg-server >= 1.1.1 < 21.1.14","xorg-x11-server-Xwayland (all versions)","tigervnc (all versions)","tigervnc (all versions)","xorg-x11-server (all versions)","xorg-x11-server-Xwayland (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","xorg-x11-server (all versions)","xorg-x11-server-Xwayland (all versions)","tigervnc (all versions)","tigervnc (all versions)","tigervnc (all versions)","xorg-x11-server","xorg-x11-server"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2024-10-30T13:34:32.792082Z"},"published":"2024-10-30","updated":"2026-11-04","sourceUpdated":"2026-11-04T21:27:56.690Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-9632","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:10090","label":"RHSA-2024:10090"},{"url":"https://access.redhat.com/errata/RHSA-2024:8798","label":"RHSA-2024:8798"},{"url":"https://access.redhat.com/errata/RHSA-2024:9540","label":"RHSA-2024:9540"},{"url":"https://access.redhat.com/errata/RHSA-2024:9579","label":"RHSA-2024:9579"},{"url":"https://access.redhat.com/errata/RHSA-2024:9601","label":"RHSA-2024:9601"},{"url":"https://access.redhat.com/errata/RHSA-2024:9690","label":"RHSA-2024:9690"},{"url":"https://access.redhat.com/errata/RHSA-2024:9816","label":"RHSA-2024:9816"},{"url":"https://access.redhat.com/errata/RHSA-2024:9818","label":"RHSA-2024:9818"},{"url":"https://access.redhat.com/errata/RHSA-2024:9819","label":"RHSA-2024:9819"},{"url":"https://access.redhat.com/errata/RHSA-2024:9820","label":"RHSA-2024:9820"},{"url":"https://access.redhat.com/errata/RHSA-2024:9901","label":"RHSA-2024:9901"},{"url":"https://access.redhat.com/errata/RHSA-2025:12751","label":"RHSA-2025:12751"},{"url":"https://access.redhat.com/errata/RHSA-2025:7163","label":"RHSA-2025:7163"},{"url":"https://access.redhat.com/errata/RHSA-2025:7165","label":"RHSA-2025:7165"},{"url":"https://access.redhat.com/errata/RHSA-2025:7458","label":"RHSA-2025:7458"},{"url":"https://access.redhat.com/security/cve/CVE-2024-9632"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2317233","label":"RHBZ#2317233"}],"tags":["cve.org"],"epss":0.00903,"epssPercentile":0.59875,"ingestedAt":"2026-11-05T21:36:00.612Z","slug":"CVE-2024-9632","body":"## Overview\n\nA flaw was found in the X.org server. Due to improperly tracked allocation size in _XkbSetCompatMap, a local attacker may be able to trigger a buffer overflow condition via a specially crafted payload, leading to denial of service or local privilege escalation in distributions where the X.org server is run with root privileges.\n\n## Affected\n\n- `xorg-server >= 1.1.1 < 21.1.14`\n- `xorg-x11-server-Xwayland (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `xorg-x11-server (all versions)`\n- `xorg-x11-server-Xwayland (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `xorg-x11-server (all versions)`\n- `xorg-x11-server-Xwayland (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\n- `xorg-x11-server`\n- `xorg-x11-server`\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":43,"depthScoreParts":{"impact":42.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}