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Commit 788803b5 authored by Steven Moreland's avatar Steven Moreland Committed by Automerger Merge Worker
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libbinder: Parcel: grow rejects large data pos am: 0db4fced 

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/29918554



Change-Id: I68944339548fb1726f98773df823d3b2cbb42146
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 9fad56cb 0db4fced

libs/binder/Parcel.cpp

+8 −0
Original line number Diff line number Diff line
@@ -2253,6 +2253,14 @@ status_t Parcel::growData(size_t len) 
        return BAD_VALUE;

    }



    if (mDataPos > mDataSize) {

        // b/370831157 - this case used to abort. We also don't expect mDataPos < mDataSize, but

        // this would only waste a bit of memory, so it's okay.

        ALOGE("growData only expected at the end of a Parcel. pos: %zu, size: %zu, capacity: %zu",

              mDataPos, len, mDataCapacity);

        return BAD_VALUE;

    }



    if (len > SIZE_MAX - mDataSize) return NO_MEMORY; // overflow

    if (mDataSize + len > SIZE_MAX / 3) return NO_MEMORY; // overflow

    size_t newSize = ((mDataSize+len)*3)/2;