usbip: vhci_hcd: fix NULL deref in status_show_vhci
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
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- Fix status
- Partial Red Hat: 4 without a fix
No CVSS vector from any source. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53, 7.2
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet: Fix deferred |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform 4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-97484
- 2026-10-03 Alias added: GHSA-gwrg-cchr-q69g
- 2026-10-03 Fix available: Linux/Linux@2b477ee5cc9c2670185ffd82911a20e1760008c2, Linux/[email protected], Linux/[email protected] +5 · CNA
- 2026-10-03 4 new references · CNA
- 2026-11-07 Affected versions changed · Red Hat
References
Other 7
- https://git.kernel.org/stable/c/2b477ee5cc9c2670185ffd82911a20e1760008c2
- https://git.kernel.org/stable/c/671d2687a790f63110c3c4213230209f5c3e0e8e
- https://git.kernel.org/stable/c/fd7d938ab4759a45eb107e658c199a2c47cc1ace
- https://git.kernel.org/stable/c/517c353e5358b2123cbf620a1798fe632fb7bdce
- https://git.kernel.org/stable/c/046a94fdb02eb1df86c8fa4614104ff801ba3ab7
- https://git.kernel.org/stable/c/dacd7c317ba12e035653c28a0eaaf23d91abc073
- https://git.kernel.org/stable/c/bc150783542ba2e7c1257d1299c6f3269bdba270
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Sources
- CVE-2026-97484 · CVE Program
- CVE-2026-97484 · NVD
- FIRST EPSS
- GHSA-gwrg-cchr-q69g · GitHub Advisory Database · CC BY 4.0
- CVE-2026-97484 · Red Hat security data · CC BY 4.0
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