Check for null data buffer in AParcel_marshal

Test: m binder_parcel_fuzzer &&
out/host/linux-x86/fuzz/x86_64/binder_parcel_fuzzer/binder_parcel_fuzzer
Bug: 265412053

Change-Id: I2f2b9b82ef1f86ba046deffba6d719c1be433ab5

parent a7546573

libs/binder/ndk/parcel.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -700,6 +700,9 @@ binder_status_t AParcel_marshal(const AParcel* parcel, uint8_t* buffer, size_t s
		return STATUS_BAD_VALUE;
		}
		const uint8_t* internalBuffer = parcel->get()->data();
		if (internalBuffer == nullptr) {
		return STATUS_UNEXPECTED_NULL;
		}
		memcpy(buffer, internalBuffer + start, len);
		return STATUS_OK;
		}