CVEvulnerability
CVE-2026-97484
- Status
- Received
- Published
- 2026-09-24
- Last modified
- 2026-10-03
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
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.
References
- https://git.kernel.org/stable/c/046a94fdb02eb1df86c8fa4614104ff801ba3ab7 git.kernel.org
- https://git.kernel.org/stable/c/2b477ee5cc9c2670185ffd82911a20e1760008c2 git.kernel.org
- https://git.kernel.org/stable/c/517c353e5358b2123cbf620a1798fe632fb7bdce git.kernel.org
- https://git.kernel.org/stable/c/671d2687a790f63110c3c4213230209f5c3e0e8e git.kernel.org
- https://git.kernel.org/stable/c/bc150783542ba2e7c1257d1299c6f3269bdba270 git.kernel.org
- https://git.kernel.org/stable/c/dacd7c317ba12e035653c28a0eaaf23d91abc073 git.kernel.org
- https://git.kernel.org/stable/c/fd7d938ab4759a45eb107e658c199a2c47cc1ace git.kernel.org