ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Wed Nov 16 14:11:51 2022 +0100| [8f975641d7e853bd8e407974db5fba998e6eb5f4] | committer: Michael Niedermayer
avcodec/bonk: Use unsigned in predictor_init_state() to avoid undefined behavior Fixes: signed integer overflow: -5010 * -717450 cannot be represented in type 'int' Fixes: 53370/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BONK_fuzzer-4945644204195840 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8f975641d7e853bd8e407974db5fba998e6eb5f4 --- libavcodec/bonk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/libavcodec/bonk.c b/libavcodec/bonk.c index 4793bf2561..182b5ef459 100644 --- a/libavcodec/bonk.c +++ b/libavcodec/bonk.c @@ -280,10 +280,10 @@ static int predictor_calc_error(int *k, int *state, int order, int error) return x; } -static void predictor_init_state(int *k, int *state, int order) +static void predictor_init_state(int *k, unsigned *state, int order) { for (int i = order - 2; i >= 0; i--) { - int x = state[i]; + unsigned x = state[i]; for (int j = 0, p = i + 1; p < order; j++, p++) { int tmp = x + shift_down(k[j] * state[p], LATTICE_SHIFT); _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
