Fixes: runtime error: signed integer overflow: -2147483647 - 2 cannot be represented in type 'int'
Fixes: 2702/clusterfuzz-testcase-minimized-4511932591636480
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
int i, ret = 0;
unsigned int pps_id = 0;
ptrdiff_t nal_size;
int i, ret = 0;
unsigned int pps_id = 0;
ptrdiff_t nal_size;
+ unsigned log2_parallel_merge_level_minus2;
AVBufferRef *pps_buf;
HEVCPPS *pps = av_mallocz(sizeof(*pps));
AVBufferRef *pps_buf;
HEVCPPS *pps = av_mallocz(sizeof(*pps));
goto err;
}
pps->lists_modification_present_flag = get_bits1(gb);
goto err;
}
pps->lists_modification_present_flag = get_bits1(gb);
- pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
- if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
+ log2_parallel_merge_level_minus2 = get_ue_golomb_long(gb);
+ if (log2_parallel_merge_level_minus2 > sps->log2_ctb_size) {
av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
- pps->log2_parallel_merge_level - 2);
+ log2_parallel_merge_level_minus2);
ret = AVERROR_INVALIDDATA;
goto err;
}
ret = AVERROR_INVALIDDATA;
goto err;
}
+ pps->log2_parallel_merge_level = log2_parallel_merge_level_minus2 + 2;
pps->slice_header_extension_present_flag = get_bits1(gb);
pps->slice_header_extension_present_flag = get_bits1(gb);