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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-27 13:03:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-27 13:04:23 +0200 |
| commit | 77d98898211eeb0241e8411428b0b364a6231744 (patch) | |
| tree | 835f0304ae4b9f7864d553407e2a6b8facfd102d | |
| parent | 1a36354698fc0453ba4d337786d2cb4d3e374cfb (diff) | |
| download | ffmpeg-streaming-77d98898211eeb0241e8411428b0b364a6231744.zip ffmpeg-streaming-77d98898211eeb0241e8411428b0b364a6231744.tar.gz | |
avcodec/pixlet: Fix runtime error: signed integer overflow: 2147483647 + 32 cannot be represented in type 'int'
Fixes: 1829/clusterfuzz-testcase-minimized-5527165321871360
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/pixlet.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/pixlet.c b/libavcodec/pixlet.c index 0dfd5ed..0e541a9 100644 --- a/libavcodec/pixlet.c +++ b/libavcodec/pixlet.c @@ -594,6 +594,10 @@ static int pixlet_decode_frame(AVCodecContext *avctx, void *data, width = bytestream2_get_be32(&ctx->gb); height = bytestream2_get_be32(&ctx->gb); + if ( width > INT_MAX - (1U << (NB_LEVELS + 1)) + || height > INT_MAX - (1U << (NB_LEVELS + 1))) + return AVERROR_INVALIDDATA; + w = FFALIGN(width, 1 << (NB_LEVELS + 1)); h = FFALIGN(height, 1 << (NB_LEVELS + 1)); |
