CVE Catalog

CVE-2026-92382

MediumCVSS 4.1
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.14%

3th percentile - higher than 3% of all known CVEs

Summary

An out-of-bounds write flaw was found in usbredir. Starting an isochronous OUT stream with a transfer count of 1 leaves the stream's single transfer buffer permanently unsubmitted, defeating the bounds check in usbredirhost_iso_packet() and allowing a usbredir peer to write past the end of the packet descriptor array on every subsequent isochronous packet.

Risk Assessment

This vulnerability can lead to memory corruption, service crashes, or potential code execution in the context of the process using usbredir. Organizations using USB virtualization with usbredir are exposed to attacks from an untrusted peer.

Recommendation

Update the usbredir library to a version containing the fix and avoid processing isochronous streams from untrusted sources. Monitor your distribution's security advisories for a patched version.

Related vulnerabilities

Original NVD description (English source)

An out-of-bounds write flaw was found in usbredir. Starting an isochronous OUT stream with a transfer count of 1 leaves the stream's single transfer buffer permanently unsubmitted, defeating the bounds check in usbredirhost_iso_packet() and allowing a usbredir peer to write past the end of the packet descriptor array on every subsequent isochronous packet.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS