tree 06be0b66e3a5e8ab649aa9c1aa7355344746a7f2
parent f89798253ab46c73090f0ccad324d6021872bf90
author Edwin Wong <edwinwong@google.com> 1611721520 -0800
committer Edwin Wong <edwinwong@google.com> 1611856597 +0000

Fix potential decrypt src pointer overflow.

There is a potential integer overflow to bypass the
source base size check in decrypt. The source pointer
can then point to the outside of the source buffer,
which could potentially leak arbitrary memory content
to destination pointer.

Test: sts-tradefed
  sts-tradefed run sts-engbuild-no-spl-lock -m StsHostTestCases --test android.security.sts.Bug_176496160#testPocBug_176496160

Test: push to device with target_hwasan-userdebug build
  adb shell /data/local/tmp/Bug-17649616064

Bug: 176496160
Bug: 176444786
Change-Id: Iea3dcd44d0f4f61de3288ed1e26d8bd5e39115d2