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Vulnerabilities CVE-2021-4460

CVE-2021-4460

None
Open
TLP:CLEAR

drm/amdkfd: Fix UBSAN shift-out-of-bounds warning

AI Analysis

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Description

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

Details

EPSS Score
0.15%

4.7th percentile

Confidence
90%
Published
Oct 1, 2025
Last Modified
Aug 11, 2026
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