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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-11 21:04:12 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-17 21:34:53 +0200 |
| commit | af78179b4d09cfd11f4392da8f44803b8fd1770c (patch) | |
| tree | a4128dc358d82c536a1e0b0667e9442b7df64fa1 | |
| parent | 0b2d4997bade5a5ccdd640e6b645006c0a4e2e3c (diff) | |
| download | ffmpeg-af78179b4d09cfd11f4392da8f44803b8fd1770c.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 af7276adbf..582b8b7e23 100644 --- a/libavcodec/dpx.c +++ b/libavcodec/dpx.c @@ -147,6 +147,9 @@ 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); |