In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Increase block_sequence array size
[Why]
It's possible to generate more than 50 steps in hwss_build_fast_sequence,
for example with a 6-pipe asic where all pipes are in one MPC chain. This
overflows the block_sequence buffer and corrupts block_sequence_steps,
causing a crash.
[How]
Expand block_sequence to 100 items. A naive upper bound on the possible
number of steps for a 6-pipe asic, ignoring the potential for steps to be
mutually exclusive, is 91 with current code, therefore 100 is sufficient.
Metrics
Affected Vendors & Products
References
History
Mon, 23 Jun 2025 12:30:00 +0000
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cvssV3_1
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Wed, 18 Jun 2025 09:45:00 +0000
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Description | In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Increase block_sequence array size [Why] It's possible to generate more than 50 steps in hwss_build_fast_sequence, for example with a 6-pipe asic where all pipes are in one MPC chain. This overflows the block_sequence buffer and corrupts block_sequence_steps, causing a crash. [How] Expand block_sequence to 100 items. A naive upper bound on the possible number of steps for a 6-pipe asic, ignoring the potential for steps to be mutually exclusive, is 91 with current code, therefore 100 is sufficient. | |
Title | drm/amd/display: Increase block_sequence array size | |
References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-06-18T09:33:53.920Z
Updated: 2025-07-11T17:21:43.246Z
Reserved: 2025-04-16T04:51:23.980Z
Link: CVE-2025-38080

No data.

Status : Awaiting Analysis
Published: 2025-06-18T10:15:41.647
Modified: 2025-06-18T13:46:52.973
Link: CVE-2025-38080
