Fixes: signed integer overflow: -69555262 * 31 cannot be represented in type 'int' Fixes: 17698/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5728970447781888
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/apedec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index ed22f0f019..087c281c49 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -1051,7 +1051,7 @@ static av_always_inline int predictor_update_3930(APEPredictor *p, d3 * p->coeffsA[filter][3]; p->lastA[filter] = decoded + (predictionA >> 9); - p->filterA[filter] = p->lastA[filter] + ((p->filterA[filter] * 31) >> 5); + p->filterA[filter] = p->lastA[filter] + ((int)(p->filterA[filter] * 31U) >> 5); sign = APESIGN(decoded); p->coeffsA[filter][0] += ((d0 < 0) * 2 - 1) * sign; -- 2.23.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
