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avformat/ipmovie: Check that the OPCODE_INIT_AUDIO_BUFFERS size is large enough

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Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f75b03c1f19_4820_descent3_level5_16bit_partial.mve
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-12-18 23:13:15 +01:00
parent cb079b1b2b
commit 8faabf3bd2
1 changed files with 1 additions and 1 deletions
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2
libavformat/ipmovie.c
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@ -339,7 +339,7 @@ static int process_ipmovie_chunk(IPMVEContext *s, AVIOContext *pb,
case OPCODE_INIT_AUDIO_BUFFERS: case OPCODE_INIT_AUDIO_BUFFERS:
av_dlog(NULL, "initialize audio buffers\n"); av_dlog(NULL, "initialize audio buffers\n");
if ((opcode_version > 1) || (opcode_size > 10)) { if ((opcode_version > 1) || (opcode_size > 10) || opcode_size < 6) {
av_dlog(NULL, "bad init_audio_buffers opcode\n"); av_dlog(NULL, "bad init_audio_buffers opcode\n");
chunk_type = CHUNK_BAD; chunk_type = CHUNK_BAD;
break; break;