ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Feb 26 20:27:59 2017 +0100| [25e93aacc2142f3b57f1e63c67ca46d304f154ef] | committer: Michael Niedermayer
avcodec/mpeg4videodec: Fix runtime error: left shift of negative value -2650 Fixes: 674/clusterfuzz-testcase-6713275880308736 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=25e93aacc2142f3b57f1e63c67ca46d304f154ef --- libavcodec/mpeg4videodec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index dac9538..9f9374d 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -283,12 +283,12 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g ctx->sprite_shift[1] = 0; break; case 2: - s->sprite_offset[0][0] = (sprite_ref[0][0] << (alpha + rho)) + + s->sprite_offset[0][0] = (sprite_ref[0][0] * (1 << alpha + rho)) + (-r * sprite_ref[0][0] + virtual_ref[0][0]) * (-vop_ref[0][0]) + (r * sprite_ref[0][1] - virtual_ref[0][1]) * (-vop_ref[0][1]) + (1 << (alpha + rho - 1)); - s->sprite_offset[0][1] = (sprite_ref[0][1] << (alpha + rho)) + + s->sprite_offset[0][1] = (sprite_ref[0][1] * (1 << alpha + rho)) + (-r * sprite_ref[0][1] + virtual_ref[0][1]) * (-vop_ref[0][0]) + (-r * sprite_ref[0][0] + virtual_ref[0][0]) * _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
