A flaw was found in xorg-x11-server. The server writes pointer barrier events into a fixed-size buffer without properly validating boundaries. An authenticated client can trigger this issue by configuring excessive pointer barriers and generating cursor motion events, causing a buffer overflow. This vulnerability may lead to arbitrary code execution or cause the server to crash, resulting in 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. The server writes pointer barrier events into a fixed-size buffer without properly validating boundaries. An authenticated client can trigger this issue by configuring excessive pointer barriers and generating cursor motion events, causing a buffer overflow. This vulnerability may lead to arbitrary code execution or cause the server to crash, resulting in a Denial of Service (DoS). | |
| Title | xorg-x11-server: XFixes Pointer Barrier Event List Buffer Overflow | |
| 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
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Updated: 2026-10-08T14:00:05Z
Weaknesses