CVE-2024-21885
Full vulnerability record from the local CVENow database.
Description
A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remote code execution in SSH X11 forwarding environments.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2024-02-28 13:15:08.197000
Last modified
2026-11-04 21:17:37.783000
View original CVE JSON
{
"id": "CVE-2024-21885",
"sourceIdentifier": "[email protected]",
"published": "2024-02-28T13:15:08.197",
"lastModified": "2026-11-04T21:17:37.783",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which may lead to an application crash or remote code execution in SSH X11 forwarding environments."
},
{
"lang": "es",
"value": "Se encontró una falla en el servidor X.Org. En la función XISendDeviceHierarchyEvent, es posible exceder la longitud de la matriz asignada cuando se agregan ciertos ID de dispositivo nuevos a la estructura xXIHierarchyInfo. Esto puede desencadenar una condición de desbordamiento de búfer de almacenamiento dinámico, lo que puede provocar un bloqueo de la aplicación o la ejecución remota de código en entornos de reenvío SSH X11."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"packageName": "xorg-server",
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"description": [
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