A flaw was found in xorg-x11-server. Due to an integer truncation issue during memory allocation calculations within the X Keyboard Extension (XKB), the server allocates an undersized buffer when resizing key types. An authenticated local client can exploit this vulnerability by sending specially crafted XKB requests, causing a heap-based buffer overflow. This can result in arbitrary code execution or a denial of service (DoS).
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History
Thu, 08 Oct 2026 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in xorg-x11-server. Due to an integer truncation issue during memory allocation calculations within the X Keyboard Extension (XKB), the server allocates an undersized buffer when resizing key types. An authenticated local client can exploit this vulnerability by sending specially crafted XKB requests, causing a heap-based buffer overflow. This can result in arbitrary code execution or a denial of service (DoS). | |
| Title | xorg-x11-server: XKB ResizeKeyType Numeric Truncation | |
| Weaknesses | CWE-787 | |
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threat_severity
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cvssV3_1
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MITRE
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Redhat
OpenCVE Enrichment
Updated: 2026-10-08T14:00:05Z
Weaknesses