An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X… (CVE-2026-94281)
Description
An out-of-bounds read vulnerability exists in libXi's XListInputDevices() function in versions before 1.8.4. This flaw could allow a malicious X server to crash an attached X client, resulting in a denial of service condition. The vulnerability does not impact confidentiality or integrity but affects availability.
CVSS v3.1
Score 6.5medium
Affected software
pkg:deb/ubuntu/libxi?arch=source&distro=esm-infra/xenialpkg:deb/ubuntu/libxi?arch=source&distro=bionicpkg:deb/ubuntu/libxi?arch=source&distro=focalpkg:deb/ubuntu/libxi?arch=source&distro=jammypkg:deb/ubuntu/libxi?arch=source&distro=noblepkg:deb/ubuntu/libxi?arch=source&distro=stonkingpkg:deb/ubuntu/libxi?arch=source&distro=resoluteRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-94281 describes an out-of-bounds read in the XListInputDevices() class parsing within libXi versions prior to 1.8.4. A malicious X server can exploit this vulnerability to cause a crash in an attached X client by triggering the out-of-bounds read. This vulnerability affects multiple specific versions of libXi as listed, and the impact is limited to availability disruption (denial of service).
Potential Impact
The vulnerability can be exploited by a malicious X server to crash an attached X client, causing a denial of service. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Upgrade libXi to version 1.8.4 or later to remediate this vulnerability. Since the affected versions are explicitly listed as prior to 1.8.4, applying the official fix by updating to 1.8.4 or newer is the recommended action.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-94281
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:Pro:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad3f51a2cdf04f656658339
Added to database: 10/17/2026, 22:22:18 UTC
Last enriched: 10/17/2026, 23:03:28 UTC
Last updated: 10/17/2026, 23:03:28 UTC
Views: 3
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