ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sat Nov 5 20:03:52 2022 +0100| [f4df49eb483fc49026a8d5578983376347d8e532] | committer: Michael Niedermayer
avcodec/bonk: Use unsigned in predictor_calc_error() to avoid undefined overflows Fixes: signed integer overflow: 22 * -2107998208 cannot be represented in type 'int' Fixes: 51363/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BONK_fuzzer-5660734784143360 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <one...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f4df49eb483fc49026a8d5578983376347d8e532 --- libavcodec/bonk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/bonk.c b/libavcodec/bonk.c index 409694f710..c3ad80ec73 100644 --- a/libavcodec/bonk.c +++ b/libavcodec/bonk.c @@ -273,7 +273,7 @@ static int predictor_calc_error(int *k, int *state, int order, int error) *state_ptr = &(state[order-2]); for (i = order-2; i >= 0; i--, k_ptr--, state_ptr--) { - int k_value = *k_ptr, state_value = *state_ptr; + unsigned k_value = *k_ptr, state_value = *state_ptr; x -= shift_down(k_value * state_value, LATTICE_SHIFT); state_ptr[1] = state_value + shift_down(k_value * x, LATTICE_SHIFT); _______________________________________________ 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".
