ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Sep 14 01:21:29 2023 +0200| [7f4fed52165cbc1b2fcc9663fc053516ae77c760] | committer: Michael Niedermayer
avcodec/aacdec_template: Better avoidance of signed integer overflow in imdct_and_windowing_eld() Fixes: 62171/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_AAC_FIXED_fuzzer-5644657180409856 Fixes: signed integer overflow: 2 * 1079352273 cannot be represented in type 'int' Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=7f4fed52165cbc1b2fcc9663fc053516ae77c760 --- libavcodec/aacdec_template.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/aacdec_template.c b/libavcodec/aacdec_template.c index 51a4cb2b66..954399f86b 100644 --- a/libavcodec/aacdec_template.c +++ b/libavcodec/aacdec_template.c @@ -2856,8 +2856,8 @@ static void imdct_and_windowing_eld(AACContext *ac, SingleChannelElement *sce) ac->mdct512_fn(ac->mdct512, buf, in, sizeof(INTFLOAT)); for (i = 0; i < n; i+=2) { - buf[i + 0] = -(int)(USE_FIXED + 1U)*buf[i + 0]; - buf[i + 1] = (int)(USE_FIXED + 1U)*buf[i + 1]; + buf[i + 0] = -(UINTFLOAT)(USE_FIXED + 1)*buf[i + 0]; + buf[i + 1] = (UINTFLOAT)(USE_FIXED + 1)*buf[i + 1]; } // Like with the regular IMDCT at this point we still have the middle half // of a transform but with even symmetry on the left and odd symmetry on _______________________________________________ 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".
