A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context.
Metrics
Affected Vendors & Products
References
History
Fri, 06 Nov 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 28 Oct 2026 15:00:00 +0000
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| 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). | A buffer overflow when handling pointer barriers in the XFIXES extension in X.Org X server before 21.1.25 and XWayland before 24.1.14 could be used by authenticated X clients to crash or potentially execute code in X server context. |
| Title | xorg-x11-server: XFixes Pointer Barrier Event List Buffer Overflow | X.Org Server XFixes Pointer Barrier Event List Buffer Overflow |
| First Time appeared |
X.org
X.org xorg-x11-server X.orgg X.orgg xwayland |
|
| Weaknesses | CWE-122 | |
| CPEs | cpe:2.3:a:x.org:xorg-x11-server:*:*:*:*:*:*:*:* cpe:2.3:a:x.orgg:xwayland:*:*:*:*:*:*:*:* |
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| Vendors & Products |
X.org
X.org xorg-x11-server X.orgg X.orgg xwayland |
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| References |
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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 | |
| References |
| |
| Metrics |
threat_severity
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cvssV3_1
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Status: PUBLISHED
Assigner: suse
Published: 2026-10-28T14:41:33.873Z
Updated: 2026-11-05T18:51:15.136Z
Reserved: 2026-09-18T08:46:56.692Z
Link: CVE-2026-93519
Updated: 2026-11-05T18:51:07.713Z
Status : Awaiting Analysis
Published: 2026-10-28T15:17:10.547
Modified: 2026-11-05T19:17:28.170
Link: CVE-2026-93519