{"id":"CVE-2024-0229","title":"Xorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access","summary":"An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege e…","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-787"],"vendor":"Red Hat","product":"xorg-server","affected":["xorg-server >= 21.1.0 < 21.1.11","tigervnc (all versions)","xorg-x11-server (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)","xorg-x11-server (all versions)","xorg-x11-server-Xwayland (all versions)","tigervnc (all versions)","tigervnc (all versions)","xorg-x11-server"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2024-02-12T16:50:56.761255Z"},"published":"2024-02-09","updated":"2026-11-04","sourceUpdated":"2026-11-04T21:07:33.035Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-0229","references":[{"url":"https://access.redhat.com/errata/RHSA-2024:0320","label":"RHSA-2024:0320"},{"url":"https://access.redhat.com/errata/RHSA-2024:0557","label":"RHSA-2024:0557"},{"url":"https://access.redhat.com/errata/RHSA-2024:0558","label":"RHSA-2024:0558"},{"url":"https://access.redhat.com/errata/RHSA-2024:0597","label":"RHSA-2024:0597"},{"url":"https://access.redhat.com/errata/RHSA-2024:0607","label":"RHSA-2024:0607"},{"url":"https://access.redhat.com/errata/RHSA-2024:0614","label":"RHSA-2024:0614"},{"url":"https://access.redhat.com/errata/RHSA-2024:0617","label":"RHSA-2024:0617"},{"url":"https://access.redhat.com/errata/RHSA-2024:0621","label":"RHSA-2024:0621"},{"url":"https://access.redhat.com/errata/RHSA-2024:0626","label":"RHSA-2024:0626"},{"url":"https://access.redhat.com/errata/RHSA-2024:0629","label":"RHSA-2024:0629"},{"url":"https://access.redhat.com/errata/RHSA-2024:2169","label":"RHSA-2024:2169"},{"url":"https://access.redhat.com/errata/RHSA-2024:2170","label":"RHSA-2024:2170"},{"url":"https://access.redhat.com/errata/RHSA-2024:2995","label":"RHSA-2024:2995"},{"url":"https://access.redhat.com/errata/RHSA-2024:2996","label":"RHSA-2024:2996"},{"url":"https://access.redhat.com/errata/RHSA-2025:12751","label":"RHSA-2025:12751"},{"url":"https://access.redhat.com/security/cve/CVE-2024-0229"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2256690","label":"RHBZ#2256690"}],"tags":["cve.org"],"epss":0.01229,"epssPercentile":0.68991,"ingestedAt":"2026-11-05T21:36:00.595Z","slug":"CVE-2024-0229","body":"## Overview\n\nAn out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation (if the server runs with extended privileges), or remote code execution in SSH X11 forwarding environments.\n\n## Affected\n\n- `xorg-server >= 21.1.0 < 21.1.11`\n- `tigervnc (all versions)`\n- `xorg-x11-server (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- `xorg-x11-server (all versions)`\n- `xorg-x11-server-Xwayland (all versions)`\n- `tigervnc (all versions)`\n- `tigervnc (all versions)`\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 don't 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":[]}