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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-12-07 09:14:08 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-12-16 22:31:13 +0100 |
| commit | 0dcd95ef8a2e16ed930296567ab1044e33602a34 (patch) | |
| tree | ed57486744c32c2c7d392e67e4682ae9b590e0f8 /libavformat/4xm.c | |
| parent | e22ec484aab7a75d5cefb654885c18c3a7b8e948 (diff) | |
| download | ffmpeg-0dcd95ef8a2e16ed930296567ab1044e33602a34.tar.gz | |
avformat/4xm: Consider max_streams on reallocating tracks array
Fixes: OOM
Fixes: 41595/clusterfuzz-testcase-minimized-ffmpeg_dem_FOURXM_fuzzer-6355979363549184
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat/4xm.c')
| -rw-r--r-- | libavformat/4xm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavformat/4xm.c b/libavformat/4xm.c index f918b1fc57..848991af5b 100644 --- a/libavformat/4xm.c +++ b/libavformat/4xm.c @@ -137,7 +137,8 @@ static int parse_strk(AVFormatContext *s, return AVERROR_INVALIDDATA; track = AV_RL32(buf + 8); - if ((unsigned)track >= UINT_MAX / sizeof(AudioTrack) - 1) { + if ((unsigned)track >= UINT_MAX / sizeof(AudioTrack) - 1 || + track >= s->max_streams) { av_log(s, AV_LOG_ERROR, "current_track too large\n"); return AVERROR_INVALIDDATA; } |