CVE-2026-74679
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.
How to fix
- Linux Linux9c8c6825a750fcd3efbe922847ca70ccd5a66857, a1c0deeba4a46481543d6b09c665f758c54c3a1a, d13f650a3485b58c124b3cda45597e8002c9c833, 11413d7ed42174b8f5d8d0b6a25d10dc88239b21, 5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3, d328fdc607fa1bb668ad512e1c918a120f78f337, fc9e54e22845c4da29588ca0986cb7c795b5a262, 6b1c8a9403a26cb0fed7a648916c74dc236da591 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 370af734dfaf8336b496b386e194648e097e248a ≤ v < 9c8c6825a750fcd3efbe922847ca70ccd5a66857, 370af734dfaf8336b496b386e194648e097e248a ≤ v < a1c0deeba4a46481543d6b09c665f758c54c3a1a, 370af734dfaf8336b496b386e194648e097e248a ≤ v < d13f650a3485b58c124b3cda45597e8002c9c833, 370af734dfaf8336b496b386e194648e097e248a ≤ v < 11413d7ed42174b8f5d8d0b6a25d10dc88239b21, 370af734dfaf8336b496b386e194648e097e248a ≤ v < 5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3, 370af734dfaf8336b496b386e194648e097e248a ≤ v < d328fdc607fa1bb668ad512e1c918a120f78f337, 370af734dfaf8336b496b386e194648e097e248a ≤ v < fc9e54e22845c4da29588ca0986cb7c795b5a262, 370af734dfaf8336b496b386e194648e097e248a ≤ v < 6b1c8a9403a26cb0fed7a648916c74dc236da591, 3.17 | 9c8c6825a750fcd3efbe922847ca70ccd5a66857, a1c0deeba4a46481543d6b09c665f758c54c3a1a, d13f650a3485b58c124b3cda45597e8002c9c833, 11413d7ed42174b8f5d8d0b6a25d10dc88239b21, 5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3, d328fdc607fa1bb668ad512e1c918a120f78f337, fc9e54e22845c4da29588ca0986cb7c795b5a262, 6b1c8a9403a26cb0fed7a648916c74dc236da591 |
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Attack Surface Management
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