OSV-2020-1331 Heap-buffer-overflow in pcpp::GtpV1Layer::GtpExtension::getNextExtensionHeaderType

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23183 Crash type: Heap-buffer-overflow READ 1 Crash state: pcpp::GtpV1Layer::GtpExtension::getNextExtensionHeaderType pcpp::GtpV1Layer::GtpExtension::getNextExtension pcpp::GtpV1Layer::getHeaderLen...