CVE-2026-92382

4.1 MEDIUM

Published 2026-09-21 · Updated 2026-09-22

AI risk analysis

Summary: The flaw allows an out-of-bounds write by exploiting a usbredir isochronous OUT stream, potentially leading to arbitrary code execution or data corruption.
Exploitability: Exploitation requires specific USB device interaction and knowledge of the vulnerability; it is moderately difficult.
Blast radius: If exploited, the impact could be significant, including loss of system integrity or unauthorized access.
Prioritized remediation: Update to a patched version of usbredir as soon as possible.

usbbuffer-overflowsecurity

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

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.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-787

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.