usbip: vhci_hcd: fix NULL deref in status_show_vhci (CVE-2026-97484) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-97484

usbip: vhci_hcd: fix NULL deref in status_show_vhci

Answer in brief

CVE-2026-97484 records a Unknown severity vulnerability in usbip: vhci_hcd: fix NULL deref in status_show_vhci. 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 <046a94fdb02eb1df86c8fa4614104ff801ba3ab7 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <dacd7c317ba12e035653c28a0eaaf23d91abc073 \|\| >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <bc150783542ba2e7c1257d1299c6f3269bdba270 \|\| >=0 <6.12.111 \|\| >=0 <6.18.53	046a94fdb02eb1df86c8fa4614104ff801ba3ab7, dacd7c317ba12e035653c28a0eaaf23d91abc073, bc150783542ba2e7c1257d1299c6f3269bdba270, 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 046a94fdb02eb1df86c8fa4614104ff801ba3ab7 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: usbip: vhci_hcd: fix NULL deref in status_show_vhci platform_get_drvdata() can return NULL if a VHCI host controller's probe failed (e.g. due to USB bus number exhaustion). status_show_vhci() checked for a NULL pdev but not for a NULL hcd returned by platform_get_drvdata(). Passing NULL to hcd_to_vhci_hcd() does not return NULL - it returns a pointer offset of 0x260, causing a NULL pointer dereference when that value is subsequently dereferenced. Add a NULL check on hcd before calling hcd_to_vhci_hcd(). Move status_show_not_ready() above status_show_vhci() to make it callable from the new error path without a forward declaration.

Quoted source text, attributed separately from HOL analysis.