Medium · published May 28, 2026
In the Linux kernel, the following vulnerability has been resolved:
ALSA: usb-audio: Avoid potential endless loop in convert_chmap_v3()
The convert_chmap_v3() has a loop with its increment size of
cs_desc->wLength, but we forgot to validate cs_desc->wLength itself,
which may lead to potential endless loop by a malformed descriptor.
Add a proper size check to abort the loop for plugging the hole.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.4.297, < 5.5 | 5.5 |
| linux/linux_kernel | ≥ 5.10.241, < 5.10.258 | 5.10.258 |
| linux/linux_kernel | ≥ 5.15.190, < 5.15.209 | 5.15.209 |
| linux/linux_kernel | ≥ 6.1.149, < 6.1.175 | 6.1.175 |
| linux/linux_kernel | ≥ 6.6.103, < 6.6.140 | 6.6.140 |
| linux/linux_kernel | ≥ 6.12.43, < 6.12.88 | 6.12.88 |
| linux/linux_kernel | ≥ 6.15.11, < 6.16 | 6.16 |
| linux/linux_kernel | ≥ 6.16.2, < 6.17 | 6.17 |
| linux/linux_kernel | ≥ 6.17.1, < 6.18.30 | 6.18.30 |
| linux/linux_kernel | ≥ 6.19, < 7.0.7 | 7.0.7 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |