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avcodec/utvideoenc: Use unsigned shift to build flags

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Fixes: left shift of 255 by 24 places cannot be represented in type 'int'
Fixes: 69083/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_UTVIDEO_fuzzer-5608202363273216

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer 2024-06-19 23:55:01 +02:00
parent a84fbd7471
commit 69e90491f1
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1 changed files with 1 additions and 1 deletions
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libavcodec/utvideoenc.c
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@ -239,7 +239,7 @@ static av_cold int utvideo_encode_init(AVCodecContext *avctx)
* - Compression mode (none/huff)
* And write the flags.
*/
c->flags = (c->slices - 1) << 24;
c->flags = (c->slices - 1U) << 24;
c->flags |= 0 << 11; // bit field to signal interlaced encoding mode
c->flags |= c->compression;