What’s Vulnerable › Vulnerabilities

CVE-2025-38080: drm/amd/display: Increase block_sequence array size

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-06-18 · updated 2026-07-30

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.

Affected products

• Linux kernel: from 4.15 before 6.6.93; from 6.7 before 6.12.31; from 6.13 before 6.14.9 — fixed in 6.12.31, 6.14.9, 6.6.93

How to fix

Upgrade to a fixed version: Linux kernel 6.12.31, 6.14.9, 6.6.93. Check the vendor advisory for mitigations.

References

• 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

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