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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < de67e80ab48f1f23663831007a2fa3c1471a7757; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < e55c5704b12eeea27e212bfab8f7e51ad3e8ac1f; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < bf1666072e7482317cf2302621766482a21a62c7; >= 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 3a7810c212bcf2f722671dadf4b23ff70a7d23ee |
| Linux | Linux | 4.15 |
References
- https://git.kernel.org/stable/c/3a7810c212bcf2f722671dadf4b23ff70a7d23eePatch
- https://git.kernel.org/stable/c/bf1666072e7482317cf2302621766482a21a62c7Patch
- https://git.kernel.org/stable/c/de67e80ab48f1f23663831007a2fa3c1471a7757Patch
- https://git.kernel.org/stable/c/e55c5704b12eeea27e212bfab8f7e51ad3e8ac1fPatch
Timeline
- Published
- Jun 18, 2025
- Last modified
- Jul 30, 2026
- NVD status
- Modified