CVE-2026-92382 — Usbredir: usbredir: unbounded iso_packet_desc[] index in usbredirhost_iso_packet() leads to heap out-of-bounds write

CVE-2026-92382

Usbredir: usbredir: unbounded iso_packet_desc[] index in usbredirhost_iso_packet() leads to heap out-of-bounds write PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Red Hat / Red Hat Enterprise Linux 10	affected
Red Hat / Red Hat Enterprise Linux 6	unknown
Red Hat / Red Hat Enterprise Linux 7	affected
Red Hat / Red Hat Enterprise Linux 8	affected
Red Hat / Red Hat Enterprise Linux 9	affected

CWE

CWE-787

References

https://access.redhat.com/security/cve/CVE-2026-92382
https://bugzilla.redhat.com/show_bug.cgi?id=2535972

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.