audio: base_fw: validate host core_id in KCPS allocation request#10898
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abonislawski wants to merge 1 commit into
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audio: base_fw: validate host core_id in KCPS allocation request#10898abonislawski wants to merge 1 commit into
abonislawski wants to merge 1 commit into
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basefw_kcps_allocation_request() passed request->core_id from the host IPC payload straight into core_kcps_adjust(), which uses it to index kcps_consumption[CONFIG_CORE_COUNT]. An out-of-range core_id turns the add-assign into an arbitrary relative write into DSP .bss. Reject core_id >= CONFIG_CORE_COUNT at the IPC boundary, mirroring the existing check in schedulers_info_get(). Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
abonislawski
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dbaluta,
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lgirdwood,
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Pull request overview
Note
Copilot was unable to run its full agentic suite in this review.
Adds IPC-boundary validation for core_id in KCPS allocation requests to prevent out-of-bounds indexing into kcps_consumption[CONFIG_CORE_COUNT] and potential arbitrary relative writes into .bss.
Changes:
- Rejects
request->core_id >= CONFIG_CORE_COUNTinbasefw_kcps_allocation_request(). - Logs an error and returns
IPC4_ERROR_INVALID_PARAMon invalidcore_id.
lgirdwood
approved these changes
Jun 12, 2026
lyakh
approved these changes
Jun 12, 2026
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basefw_kcps_allocation_request() passed request->core_id from the host IPC payload straight into core_kcps_adjust(), which uses it to index kcps_consumption[CONFIG_CORE_COUNT]. An out-of-range core_id turns the add-assign into an arbitrary relative write into DSP .bss.
Reject core_id >= CONFIG_CORE_COUNT at the IPC boundary, mirroring the existing check in schedulers_info_get().