Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 370af734dfaf8336b496b386e194648e097e248a before 9c8c6825a750fcd3efbe922847ca70ccd5a66857; affected 370af734dfaf8336b496b386e194648e097e248a before a1c0deeba4a46481543d6b09c665f758c54c3a1a; affected 370af734dfaf8336b496b386e194648e097e248a before d13f650a3485b58c124b3cda45597e8002c9c833; affected 370af734dfaf8336b496b386e194648e097e248a before 11413d7ed42174b8f5d8d0b6a25d10dc88239b21; affected 370af734dfaf8336b496b386e194648e097e248a before 5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3; affected 370af734dfaf8336b496b386e194648e097e248a before d328fdc607fa1bb668ad512e1c918a120f78f337; affected 370af734dfaf8336b496b386e194648e097e248a before fc9e54e22845c4da29588ca0986cb7c795b5a262; affected 370af734dfaf8336b496b386e194648e097e248a before 6b1c8a9403a26cb0fed7a648916c74dc236da591 |
| Linux / Linux | affected 3.17; unaffected 0 before 3.17; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.152 through 6.6.*; unaffected 6.12.104 through 6.12.*; unaffected 6.18.45 through 6.18.*; unaffected 7.1.9 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- 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/11413d7ed42174b8f5d8d0b6a25d10dc88239b21
- https://git.kernel.org/stable/c/5b2b3a3229a3f4c493ffdee53aee2f173b6f13b3
- https://git.kernel.org/stable/c/d328fdc607fa1bb668ad512e1c918a120f78f337
- https://git.kernel.org/stable/c/fc9e54e22845c4da29588ca0986cb7c795b5a262
- https://git.kernel.org/stable/c/6b1c8a9403a26cb0fed7a648916c74dc236da591