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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-09 17:08:14 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-14 18:49:03 +0300 |
| commit | 3078fc9de74fcb4845125621fb32f3495790cb48 (patch) | |
| tree | b05a8d1cba401d7d54b993c42ebbe4c7106f363b | |
| parent | 5d7b87af7e26a961bc345329c4bb5ba39fd88d8b (diff) | |
avcodec/snowdec: Check width
Fixes: out of array read
Fixes: 1419/clusterfuzz-testcase-minimized-6108700873850880
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 78aa93807b3e0674e34d32c0bf6f78d7f5b7927e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/snowdec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c index 97f55288c1..022e9693c7 100644 --- a/libavcodec/snowdec.c +++ b/libavcodec/snowdec.c @@ -384,6 +384,10 @@ static int decode_header(SnowContext *s){ av_log(s->avctx, AV_LOG_ERROR, "spatial_decomposition_count %d too large for size\n", s->spatial_decomposition_count); return AVERROR_INVALIDDATA; } + if (s->avctx->width > 65536-4) { + av_log(s->avctx, AV_LOG_ERROR, "Width %d is too large\n", s->avctx->width); + return AVERROR_INVALIDDATA; + } s->qlog += get_symbol(&s->c, s->header_state, 1); |