High · published October 1, 2025
In the Linux kernel, the following vulnerability has been resolved:
drm/amdkfd: Fix UBSAN shift-out-of-bounds warning
If get_num_sdma_queues or get_num_xgmi_sdma_queues is 0, we end up
doing a shift operation where the number of bits shifted equals
number of bits in the operand. This behaviour is undefined.
Set num_sdma_queues or num_xgmi_sdma_queues to ULLONG_MAX, if the
count is >= number of bits in the operand.
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1472
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | < 5.4.118 | 5.4.118 |
| linux/linux_kernel | ≥ 5.5, < 5.10.36 | 5.10.36 |
| linux/linux_kernel | ≥ 5.11, < 5.11.20 | 5.11.20 |
| linux/linux_kernel | ≥ 5.12, < 5.12.3 | 5.12.3 |