CVE-2025-38080 Information

Jun 19, 2025 cve

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.

Reference

https://git.kernel.org/stable/c/3a7810c212bcf2f722671dadf4b23ff70a7d23ee https://git.kernel.org/stable/c/bf1666072e7482317cf2302621766482a21a62c7 https://git.kernel.org/stable/c/de67e80ab48f1f23663831007a2fa3c1471a7757 https://git.kernel.org/stable/c/e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f

CNNVD-202506-2216 (Published: 2025-06-18)

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