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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < de67e80ab48f1f23663831007a2fa3c1471a7757affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < e55c5704b12eeea27e212bfab8f7e51ad3e8ac1faffected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < bf1666072e7482317cf2302621766482a21a62c7affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 3a7810c212bcf2f722671dadf4b23ff70a7d23eeaffected
Linux Linux
Default version status: affected
4.15affected0 to < 4.15unaffected6.6.93 to ≤ 6.6.*unaffected6.12.31 to ≤ 6.12.*unaffected6.14.9 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected