Fixes undefined shift, all callers should be changed to check the value they use with wp_exp2() or its return value.
Fixes: 692/clusterfuzz-testcase-5757381516460032 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/wavpack.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/wavpack.h b/libavcodec/wavpack.h index a1b46d5bd7..0196574aab 100644 --- a/libavcodec/wavpack.h +++ b/libavcodec/wavpack.h @@ -171,6 +171,8 @@ static av_always_inline int wp_exp2(int16_t val) res = wp_exp2_table[val & 0xFF] | 0x100; val >>= 8; + if (val > 31) + return INT_MIN; res = (val > 9) ? (res << (val - 9)) : (res >> (9 - val)); return neg ? -res : res; } -- 2.11.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
