Description
In the Linux kernel, the following vulnerability has been resolved:
usb: gadget: f_ncm: Use unsigned int for ndp_index
The variable ndp_index is declared as a signed integer, but it stores the return value of get_ncm(), which is unsigned.
A malicious host can supply a large offset that overflows the signed ndp_index, making it negative. Because ndp_index is compared against unsigned bounds, this negative value bypasses sanity checks and leads to an out-of-bounds read when calculating the address of the NDP block (ntb_ptr + ndp_index).
Fix this by changing ndp_index to unsigned int to ensure consistent unsigned comparisons throughout the function.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 370af734dfaf8336b496b386e194648e097e248a, < 9c8c6825a750fcd3efbe922847ca70ccd5a66857; >= 370af734dfaf8336b496b386e194648e097e248a, < a1c0deeba4a46481543d6b09c665f758c54c3a1a; >= 370af734dfaf8336b496b386e194648e097e248a, < d13f650a3485b58c124b3cda45597e8002c9c833; >= 370af734dfaf8336b496b386e194648e097e248a, < 11413d7ed42174b8f5d8d0b6a25d10dc88239b21; >= 370af734dfaf8336b496b386e194648e097e248a, < 5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3; >= 370af734dfaf8336b496b386e194648e097e248a, < d328fdc607fa1bb668ad512e1c918a120f78f337; >= 370af734dfaf8336b496b386e194648e097e248a, < fc9e54e22845c4da29588ca0986cb7c795b5a262; >= 370af734dfaf8336b496b386e194648e097e248a, < 6b1c8a9403a26cb0fed7a648916c74dc236da591 |
| Linux | Linux | 3.17 |
References
- https://git.kernel.org/stable/c/11413d7ed42174b8f5d8d0b6a25d10dc88239b21
- https://git.kernel.org/stable/c/5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3
- https://git.kernel.org/stable/c/6b1c8a9403a26cb0fed7a648916c74dc236da591
- https://git.kernel.org/stable/c/9c8c6825a750fcd3efbe922847ca70ccd5a66857
- https://git.kernel.org/stable/c/a1c0deeba4a46481543d6b09c665f758c54c3a1a
- https://git.kernel.org/stable/c/d13f650a3485b58c124b3cda45597e8002c9c833
- https://git.kernel.org/stable/c/d328fdc607fa1bb668ad512e1c918a120f78f337
- https://git.kernel.org/stable/c/fc9e54e22845c4da29588ca0986cb7c795b5a262
Timeline
- Published
- Aug 22, 2026
- Last modified
- Nov 6, 2026
- NVD status
- Received