[all-commits] [llvm/llvm-project] 6732a5: scudo: Require fault address to be in bounds for UAF.

[pcc via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 6732a5328cf03872d53827d3e0e283fcf16b551a
      https://github.com/llvm/llvm-project/commit/6732a5328cf03872d53827d3e0e283fcf16b551a
  Author: Peter Collingbourne <peter at pcc.me.uk>
  Date:   2021-05-12 (Wed, 12 May 2021)

  Changed paths:
    M compiler-rt/lib/scudo/standalone/combined.h

  Log Message:
  -----------
  scudo: Require fault address to be in bounds for UAF.

The bounds check that we previously had here was suitable for secondary
allocations but not for UAF on primary allocations, where it is likely
to result in false positives. Fix it by using a different bounds check
for UAF that requires the fault address to be in bounds.

Differential Revision: https://reviews.llvm.org/D102376