| Message ID | 20231005194440.1678-1-michael@niedermayer.cc |
|---|---|
| State | Accepted |
| Commit | cd66606a8f9124a75a126d579c18f263b874d3a5 |
| Headers | show |
| Series | [FFmpeg-devel,1/5] avcodec/bonk: Fix undefined overflow in predictor_calc_error() | expand |
| Context | Check | Description |
|---|---|---|
| yinshiyou/make_loongarch64 | success | Make finished |
| yinshiyou/make_fate_loongarch64 | success | Make fate finished |
diff --git a/libavcodec/bonk.c b/libavcodec/bonk.c index 6cd6a0af619..65679e5fb65 100644 --- a/libavcodec/bonk.c +++ b/libavcodec/bonk.c @@ -270,7 +270,7 @@ static inline int shift(int a, int b) static int predictor_calc_error(int *k, int *state, int order, int error) { - int i, x = error - shift_down(k[order-1] * (unsigned)state[order-1], LATTICE_SHIFT); + int i, x = error - (unsigned)shift_down(k[order-1] * (unsigned)state[order-1], LATTICE_SHIFT); int *k_ptr = &(k[order-2]), *state_ptr = &(state[order-2]);
Fixes: signed integer overflow: -2146469728 - 1488954 cannot be represented in type 'int' Fixes: 62490/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BONK_fuzzer-5612782399389696 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/bonk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)