CVE-2026-92382
Usbredir: usbredir: unbounded iso_packet_desc[] index in usbredirhost_iso_packet() leads to heap out-of-bounds write
- State
- Published
- Severity
- 4.1 Medium
- Published
- Sep 21, 2026
- Updated
- Sep 21, 2026
- Reserved
- Sep 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.1 Medium | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H | redhat |
Weaknesses
- CWE-787 Out-of-bounds Write
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-92382vdb-entry
- RHBZ#2535972issue-tracking
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