Fixes: left shift of negative value -456 Fixes: 15561/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPC8_fuzzer-5758130404720640
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/mpc8.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/mpc8.c b/libavcodec/mpc8.c index 3be2f79a5a..75943064da 100644 --- a/libavcodec/mpc8.c +++ b/libavcodec/mpc8.c @@ -364,7 +364,7 @@ static int mpc8_decode_frame(AVCodecContext * avctx, void *data, for(j = 0; j < SAMPLES_PER_BAND; j += SAMPLES_PER_BAND / 2){ cnt = get_vlc2(gb, q1_vlc.table, MPC8_Q1_BITS, 2); t = mpc8_get_mask(gb, 18, cnt); - for(k = 0; k < SAMPLES_PER_BAND / 2; k++, t <<= 1) + for(k = 0; k < SAMPLES_PER_BAND / 2; k++, t += (unsigned)t) c->Q[ch][off + j + k] = (t & 0x20000) ? (get_bits1(gb) << 1) - 1 : 0; } break; -- 2.22.0 _______________________________________________ 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".
