virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-07-11 14:30:22 +02:00
Code Issues Releases Activity

avcodec/g723_1dec: fix invalid shift with negative sid_gain

Browse Source 
Fixes: left shift of negative value -1
Fixes: 18395/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_G723_1_fuzzer-5710313034350592

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 1850c3feaa)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2019-10-26 21:56:03 +02:00
parent 56d708c57f
commit f860df25cc
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/g723_1dec.c
View File

@ -667,7 +667,7 @@ static int estimate_sid_gain(G723_1_Context *p)
if (p->sid_gain < 0) t = INT32_MIN; if (p->sid_gain < 0) t = INT32_MIN;
else t = INT32_MAX; else t = INT32_MAX;
} else } else
t = p->sid_gain << shift; t = p->sid_gain * (1 << shift);
} else if(shift < -31) { } else if(shift < -31) {
t = (p->sid_gain < 0) ? -1 : 0; t = (p->sid_gain < 0) ? -1 : 0;
}else }else