High · published October 4, 2025
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: don't trust firmware n_channels
If the firmware sends us a corrupted MCC response with
n_channels much larger than the command response can be,
we might copy far too much (uninitialized) memory and
even crash if the n_channels is large enough to make it
run out of the one page allocated for the FW response.
Fix that by checking the lengths. Doing a < comparison
would be sufficient, but the firmware should be doing
it correctly, so check more strictly.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 4.1, < 5.4.244 | 5.4.244 |
| linux/linux_kernel | ≥ 5.5, < 5.10.181 | 5.10.181 |
| linux/linux_kernel | ≥ 5.11, < 5.15.113 | 5.15.113 |
| linux/linux_kernel | ≥ 5.16, < 6.1.30 | 6.1.30 |
| linux/linux_kernel | ≥ 6.2, < 6.3.4 | 6.3.4 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |