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CVE-2026-92382

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

4.1 Medium

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.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
High
Privileges needed
High
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

0.14%Unchanged since Sep 22, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.1

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

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.

Record
CVE-2026-92382
CVSS 3.1
4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
EUVDEUVD-2026-84029 4.1

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.

Record
EUVD-2026-84029
CVSS 3.1
4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-xhvc-xfq9-4pmw 4.1

An out-of-bounds write flaw was found in usbredir. Starting an isochronous OUT stream with a...

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.

Record
GHSA-xhvc-xfq9-4pmw
CVSS 3.1
4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
NVD 4.1

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.

Record
CVE-2026-92382
CVSS 3.1
4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-787
Updated
2026-11-02
OSVDEBIAN-CVE-2026-92382 4.1

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.

Record
DEBIAN-CVE-2026-92382
CVSS 3.1
4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-92382 4.1

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.

Record
UBUNTU-CVE-2026-92382
CVSS 3.1
4.1 MediumCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-105338 No score

CVE-2026-92382 affecting package usbredir 0.13.0-1

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.

Record
AZL-105338
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
usbredir
Azure Linux:3
through 0.13.0-1 None known
usbredir
Debian:12
All versions, plus listed versions
0.13.0-20.13.0-2.10.13.0-2.1~exp10.14.0-10.15.0-1
None known
usbredir
Debian:13
All versions, plus listed versions
0.15.0-1
None known
usbredir
Debian:14
All versions, plus listed versions
0.15.0-1
None known
usbredir
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
0.6-20.6-2ubuntu10.6-2ubuntu1.10.6-2ubuntu1.1+esm1
None known
usbredir
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
0.7-1ubuntu20.7.1-10.7.1-1ubuntu0.16.04.1~esm1
None known
usbredir
Ubuntu:18.04:LTS
All versions, plus listed versions
0.7.1-10.7.1-1ubuntu0.18.04.1
None known
usbredir
Ubuntu:20.04:LTS
All versions, plus listed versions
0.8.0-10.8.0-1ubuntu0.1
None known
usbredir
Ubuntu:22.04:LTS
All versions, plus listed versions
0.8.0-1build10.11.0-20.11.0-2build1
None known
usbredir
Ubuntu:24.04:LTS
All versions, plus listed versions
0.13.0-20.13.0-2.10.13.0-2.1build1
None known
usbredir
Ubuntu:26.10
All versions, plus listed versions
0.15.0-1build1
None known
usbredir
Ubuntu:26.04:LTS
All versions, plus listed versions
0.15.0-10.15.0-1build1
None known

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-92382 is a medium vulnerability (CVSS 4.1) in Red Hat Enterprise Linux 10, published September 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. No source names a fixed version.

References

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