ffmpeg | branch: release/2.8 | Michael Niedermayer <mich...@niedermayer.cc> | Sat May 23 22:02:56 2020 +0200| [2c44582d1fc053f3dbf2fc314666b33660a47786] | committer: Michael Niedermayer
avcodec/wmalosslessdec: Fix integer overflow in mclms_predict() Fixes: signed integer overflow: 2147483636 + 2048 cannot be represented in type 'int' Fixes: 22016/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMALOSSLESS_fuzzer-5109395618004992 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit c42ed06695848617350a94543823e850f190b3ab) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2c44582d1fc053f3dbf2fc314666b33660a47786 --- libavcodec/wmalosslessdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/wmalosslessdec.c b/libavcodec/wmalosslessdec.c index b2622ddbd3..87a672845e 100644 --- a/libavcodec/wmalosslessdec.c +++ b/libavcodec/wmalosslessdec.c @@ -675,7 +675,7 @@ static void mclms_predict(WmallDecodeCtx *s, int icoef, int *pred) for (i = 0; i < ich; i++) pred[ich] += s->channel_residues[i][icoef] * s->mclms_coeffs_cur[i + num_channels * ich]; - pred[ich] += (1 << s->mclms_scaling) >> 1; + pred[ich] += (1U << s->mclms_scaling) >> 1; pred[ich] >>= s->mclms_scaling; s->channel_residues[ich][icoef] += (unsigned)pred[ich]; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
