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CVE-2026-97484

usbip: vhci_hcd: fix NULL deref in status_show_vhci PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before 2b477ee5cc9c2670185ffd82911a20e1760008c2; affected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before 671d2687a790f63110c3c4213230209f5c3e0e8e; affected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before fd7d938ab4759a45eb107e658c199a2c47cc1ace; affected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before 517c353e5358b2123cbf620a1798fe632fb7bdce; affected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before 046a94fdb02eb1df86c8fa4614104ff801ba3ab7; affected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before dacd7c317ba12e035653c28a0eaaf23d91abc073; affected 0775a9cbc694e8c7276688be3bbd2f386167ab54 before bc150783542ba2e7c1257d1299c6f3269bdba270
Linux / Linuxaffected 4.9; unaffected 0 before 4.9; unaffected 5.10.271 through 5.10.*; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2 through *

CWE

No CWE identifiers supplied.

References