Edwin Wong a6e551feef [RESTRICT AUTOMERGE] Fix potential decrypt destPtr overflow.
There is a potential integer overflow to bypass the
destination base size check in decrypt. The destPtr
can then point to the outside of the destination buffer.

Test: sts-tradefed
  sts-tradefed run sts-engbuild-no-spl-lock -m StsHostTestCases --test android.security.sts.Bug_176444622#testPocBug_176444622

Test: push to device with target_hwasan-userdebug build
  adb shell /data/local/tmp/Bug-17644462264

Bug: 176444622
Bug: 176496353
Change-Id: I71b390846a17aecbb9180865e1f9538b4b464abf
2021-02-25 17:43:13 +00:00
2019-06-18 16:09:36 +08:00
Description
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