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avcodec/hevc/ps: use unsigned shift 

Fixes: left shift of 1 by 31 places cannot be represented in type 'int'
Fixes: 70726/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-6149928703819776

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-08-17 01:15:04 +02:00
parent 043875941f
commit 67947f2a1c
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1 changed files with 1 additions and 1 deletions
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libavcodec/hevc/ps.c
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@ -1101,7 +1101,7 @@ int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
sps->used_by_curr_pic_lt = 0;
for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
sps->used_by_curr_pic_lt |= get_bits1(gb) * (1 << i);
sps->used_by_curr_pic_lt |= get_bits1(gb) << i;
}
}