CVE-2025-38080

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < de67e80ab48f1f23663831007a2fa3c1471a7757affected
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < e55c5704b12eeea27e212bfab8f7e51ad3e8ac1faffected
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < bf1666072e7482317cf2302621766482a21a62c7affected
LinuxLinux4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c < 3a7810c212bcf2f722671dadf4b23ff70a7d23eeaffected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux6.6.93 <= 6.6.*unaffected
LinuxLinux6.12.31 <= 6.12.*unaffected
LinuxLinux6.14.9 <= 6.14.*unaffected
LinuxLinux6.15 <= *unaffected

Weaknesses

References