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author | Hung-ying Tyan <tyanh@google.com> | 2020-09-02 05:09:25 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2020-09-02 05:09:25 +0000 |
commit | 706d6111b04bc5d7afca2b735c9f55049ef2e079 (patch) | |
tree | 010fd5704df43b73287aee7b20d889978fbaeb2a | |
parent | 38f3a8779e12277c91c91a00ceb13234870f8af1 (diff) | |
parent | 6ee23e3c90361f2f371663db06eb9a8fd0f2186c (diff) | |
download | voip-android10-gsi.tar.gz |
Merge "Merge branch android10-qpr3-release" into android10-gsiandroid10-gsi
-rw-r--r-- | src/jni/rtp/AudioGroup.cpp | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/src/jni/rtp/AudioGroup.cpp b/src/jni/rtp/AudioGroup.cpp index aa3fc66..e01fbca 100644 --- a/src/jni/rtp/AudioGroup.cpp +++ b/src/jni/rtp/AudioGroup.cpp @@ -412,20 +412,29 @@ void AudioStream::decode(int tick) sockaddr_storage remote; socklen_t addrlen = sizeof(remote); - int length = recvfrom(mSocket, buffer, sizeof(buffer), + int bufferSize = sizeof(buffer); + int length = recvfrom(mSocket, buffer, bufferSize, MSG_TRUNC | MSG_DONTWAIT, (sockaddr *)&remote, &addrlen); // Do we need to check SSRC, sequence, and timestamp? They are not // reliable but at least they can be used to identify duplicates? - if (length < 12 || length > (int)sizeof(buffer) || + if (length < 12 || length > bufferSize || (ntohl(*(uint32_t *)buffer) & 0xC07F0000) != mCodecMagic) { ALOGV("stream[%d] malformed packet", mSocket); return; } int offset = 12 + ((buffer[0] & 0x0F) << 2); + if (offset+2 >= bufferSize) { + ALOGV("invalid buffer offset: %d", offset+2); + return; + } if ((buffer[0] & 0x10) != 0) { offset += 4 + (ntohs(*(uint16_t *)&buffer[offset + 2]) << 2); } + if (offset >= bufferSize) { + ALOGV("invalid buffer offset: %d", offset); + return; + } if ((buffer[0] & 0x20) != 0) { length -= buffer[length - 1]; } |