usb: core: hcd: fix possible deadlock in rh control transfers (CVE-2026-97483) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97483

usb: core: hcd: fix possible deadlock in rh control transfers

Answer in brief

CVE-2026-97483 records a Unknown severity vulnerability in usb: core: hcd: fix possible deadlock in rh control transfers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fff917c85d37a294397c5440a795591ca9d6b602 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <549672a3fb6b36ea408238f89ecf9f41d2da6225 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5559f43d76b398392b26a15cbc16d731969cd1c \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	fff917c85d37a294397c5440a795591ca9d6b602, 549672a3fb6b36ea408238f89ecf9f41d2da6225, d5559f43d76b398392b26a15cbc16d731969cd1c, 6.12.111, 6.18.53

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux.
Review the reported fix. Update Linux/Linux to fff917c85d37a294397c5440a795591ca9d6b602 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: usb: core: hcd: fix possible deadlock in rh control transfers >From within the SCSI error handler memory allocations must not trigger IO. Handling errors in UAS and the storage driver may involve resetting a device. The thread doing the reset itself relies on VM magic. However, that is insufficient, as resetting a device involves resuming it. Resumption as well as resetting involves conrol transfers to the parent of the device to be reset. That may be a root hub. Hence usbcore must heed the flags passed to usb_submit_urb() processing control transfers to root hubs. The problem exist since the storage driver has been merged.

Quoted source text, attributed separately from HOL analysis.