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Integrate EFI_MEMORY_RP on Free Memory Updates #931

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merged 3 commits into from
May 1, 2024

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TaylorBeebe
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Description

mu_basecore and mu_silicon_tiano_arm submodules have been updated to support EFI_MEMORY_RP on free memory which will cause accesses to unallocated or freed memory to trigger a page fault and target one of the most common programmer errors.

This memory protection feature is configurable via the DXE memory protection settings.

  • Impacts functionality?
    • Functionality - Does the change ultimately impact how firmware functions?
    • Examples: Add a new library, publish a new PPI, update an algorithm, ...
  • Impacts security?
    • Security - Does the change have a direct security impact on an application,
      flow, or firmware?
    • Examples: Crypto algorithm change, buffer overflow fix, parameter
      validation improvement, ...
  • Breaking change?
    • Breaking change - Will anyone consuming this change experience a break
      in build or boot behavior?
    • Examples: Add a new library class, move a module to a different repo, call
      a function in a new library class in a pre-existing module, ...
  • Includes tests?
    • Tests - Does the change include any explicit test code?
    • Examples: Unit tests, integration tests, robot tests, ...
  • Includes documentation?
    • Documentation - Does the change contain explicit documentation additions
      outside direct code modifications (and comments)?
    • Examples: Update readme file, add feature readme file, link to documentation
      on an a separate Web page, ...

How This Was Tested

Tested by booting to Windows on Q35, booting to shell on SBSA, and running the DxePagingAuditTestApp.

Integration Instructions

N/A

@TaylorBeebe TaylorBeebe requested review from os-d and apop5 April 27, 2024 17:37
@github-actions github-actions bot added the impact:security Has a security impact label Apr 27, 2024
@TaylorBeebe TaylorBeebe merged commit ce21957 into microsoft:main May 1, 2024
28 checks passed
@TaylorBeebe TaylorBeebe deleted the integrate_rp_on_free_mem branch May 1, 2024 18:35
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3 participants