CVE-2026-92382

EUVD-2026-84029
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.1 MEDIUM
LOCAL
HIGH
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 3.03%
Debian logo
Debian Releases
Debian Product
Codename
usbredir
bookworm
postponed
forky
vulnerable
sid
vulnerable
trixie
postponed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
usbredir
bionic
deferred
focal
deferred
jammy
deferred
noble
deferred
resolute
deferred
stonking
deferred
trusty
deferred
xenial
deferred