CVE-2026-93544
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BaseFortify

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: SUSE

Description
An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-10-15
AI Q&A
2026-09-24
EPSS Evaluated
2026-10-13
NVD
CVE-2026-93544
EUVD
EUVD-2026-86275

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
x.org libXi 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This vulnerability is an out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing. It exists in libXi versions before 1.8.4. A malicious X server can exploit this to crash an attached X client by sending specially crafted data.

Detection Guidance

This vulnerability involves an out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing. Detection requires checking the installed version of libXi. If your system uses libXi before version 1.8.4, it is vulnerable. Commands to check the version include 'dpkg -l libxi6' on Debian-based systems or 'rpm -q libXi' on RPM-based systems.

Impact Analysis

If you use an X client connected to an untrusted X server, this vulnerability could cause your client application to crash. This may lead to denial of service or unexpected behavior in applications relying on libXi.

Compliance Impact

This vulnerability does not directly impact compliance with GDPR, HIPAA, or similar standards as it is a technical flaw in libXi's XI2 XIQueryDevice reply parsing that could crash an X client. Compliance risks would only arise if this flaw led to unauthorized data access or service disruption in systems handling regulated data.

Mitigation Strategies

Update libXi to version 1.8.4 or later to address the out-of-bounds read vulnerability in XI2 XIQueryDevice reply parsing.

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