Native DLLs: only load imported DLLs from System32 #112359
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* main: [Android] Run CoreCLR functional tests on Android (dotnet#112283) [LoongArch64] Fix some assertion failures for Debug ILC building Debug NativeAOT testcases. (dotnet#112229) Fix suspicious code fragments (dotnet#112384) `__ComObject` doesn't support dynamic interface map (dotnet#112375) Native DLLs: only load imported DLLs from System32 (dotnet#112359) [main] Update dependencies from dotnet/roslyn (dotnet#112314) Update SVE instructions that writes to GC regs (dotnet#112389) Bring up android+coreclr windows build. (dotnet#112256) Never use heap for return buffers (dotnet#112060) Wait to complete the test before releasing the agile reference. (dotnet#112387) Prevent returning disposed HTTP/1.1 connections to the pool (dotnet#112383) Fingerprint dotnet.js if writing import map to html is enabled (dotnet#112407) Remove duplicate definition of CORECLR_HOSTING_API_LINKAGE (dotnet#112096) Update the exception message to reflect current behavior. (dotnet#112355) Use enum for frametype not v table (dotnet#112166) Enable AltJits build for LoongArch64 and RiscV64 (dotnet#110282) Guard members of MonoType union & fix related bugs (dotnet#111645) Add optional hooks for debugging OpenSSL memory allocations (dotnet#111539) JIT: Optimize struct parameter register accesses in the backend (dotnet#110819) NativeAOT: Cover more opcodes in type preinitializer (dotnet#112073)
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By using the /DEPENDENTLOADFLAG link.exe flag, we can tell the Windows loader to only look for referenced DLLs in the System32 directory. This prevents DLL injection, like #87495 fixed in 2023. This is a defense-in-depth change; it does not solve any known security problem.
This PR is a new version of #89311 which was merged in 2023 but reverted by #95540 shortly after. The reason the original PR was reverted is that
link.exedid not support changing/DEPENDENTLOADFLAGwhen consuming PGO data ( internal Microsoft issue link ). It appears that issue has been fixed in the version oflink.exeused to build .NET.