OSV-2020-663 Heap-buffer-overflow in Variant_decodeJson

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18259 Crash type: Heap-buffer-overflow READ 4 Crash state: VariantdecodeJson UAdecodeJson fuzzjsondecodeencode.cc...

OSV-2020-494 Use-of-uninitialized-value in Variant_decodeJson

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14620 Crash type: Use-of-uninitialized-value Crash state: VariantdecodeJson UAdecodeJson fuzzjsondecode.cc...