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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-11 21:04:12 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:53:29 +0200 |
| commit | 1630c9e0b6e62a2ec03533a95d8bea7b4fc72183 (patch) | |
| tree | e15650cf69a32821f6ac5802299b3caee8f7d770 | |
| parent | 5213143514001604562590e6cf2e8c030948e9ef (diff) | |
| download | ffmpeg-1630c9e0b6e62a2ec03533a95d8bea7b4fc72183.tar.gz | |
avcodec/dpx: Check bits_per_color earlier
Fixes: shift exponent 251 is too large for 32-bit type 'int'
Fixes: 32147/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DPX_fuzzer-5519111675314176
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit c093eb30311b7148a4da1c7555498187c8cdf0db)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dpx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavcodec/dpx.c b/libavcodec/dpx.c index cf23bb6ba1..5f47b9e341 100644 --- a/libavcodec/dpx.c +++ b/libavcodec/dpx.c @@ -175,6 +175,9 @@ static int decode_frame(AVCodecContext *avctx, return AVERROR_PATCHWELCOME; } + if (bits_per_color > 32) + return AVERROR_INVALIDDATA; + buf += 820; avctx->sample_aspect_ratio.num = read32(&buf, endian); avctx->sample_aspect_ratio.den = read32(&buf, endian); |