avcodec/qdm2: error out of qdm2_fft_decode_tones() before entering endless loop
authorMichael Niedermayer <michael@niedermayer.cc>
Sun, 23 Jun 2019 23:01:03 +0000 (01:01 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Mon, 8 Jul 2019 07:44:35 +0000 (09:44 +0200)
commit694be24bd6c4cc9c62222f4583260bf79056e4c1
tree2739d57b8f287cded3f01e1f6922e7408bb0e64f
parentae021c1239ec3bc0a30dc5a4720569071599ece4
avcodec/qdm2: error out of qdm2_fft_decode_tones() before entering endless loop

Fixes: signed integer overflow: 2147483646 + 2 cannot be represented in type 'int'
Fixes: infinite loop
Fixes: 15396/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_QDM2_fuzzer-5116605501014016

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/qdm2.c