ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun May 10 11:08:28 2020 +0200| [22e51e95ac97864b3d7b21124eaf8fcce147f61e] | committer: Michael Niedermayer
avcodec/alac: Fix integer overflow with 24/20bps samples Fixes: signed integer overflow: 1020048 * 4096 cannot be represented in type 'int' Fixes: 20492/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5753877751660544 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=22e51e95ac97864b3d7b21124eaf8fcce147f61e --- libavcodec/alac.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/alac.c b/libavcodec/alac.c index c8c04223a0..82689da02a 100644 --- a/libavcodec/alac.c +++ b/libavcodec/alac.c @@ -397,13 +397,13 @@ static int decode_element(AVCodecContext *avctx, AVFrame *frame, int ch_index, case 20: { for (ch = 0; ch < channels; ch++) { for (i = 0; i < alac->nb_samples; i++) - alac->output_samples_buffer[ch][i] *= 1 << 12; + alac->output_samples_buffer[ch][i] *= 1U << 12; }} break; case 24: { for (ch = 0; ch < channels; ch++) { for (i = 0; i < alac->nb_samples; i++) - alac->output_samples_buffer[ch][i] *= 1 << 8; + alac->output_samples_buffer[ch][i] *= 1U << 8; }} break; } _______________________________________________ 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".
