CVE-2026-97484

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.

Affected Software

Weaknesses

References

• 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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