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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-03-26 21:34:03 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-04-15 22:38:11 +0200 |
| commit | 8ee94724dfac311229879620e5e8c87e0d0d9e45 (patch) | |
| tree | 310a635bdf37df83c7e53817970cbc599557b968 | |
| parent | 382347055dbff204290c621262b1b930cd612859 (diff) | |
| download | ffmpeg-8ee94724dfac311229879620e5e8c87e0d0d9e45.tar.gz | |
avcodec/g729postfilter: Limit shift in long term filter
Fixes: shift exponent 34 is too large for 32-bit type 'int'
Fixes: 57389/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ACELP_KELVIN_fuzzer-6229522659016704
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 6d1d8609ac1054017ea3d11b325ed94a1205e9fd)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/g729postfilter.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/g729postfilter.c b/libavcodec/g729postfilter.c index 617744ec8e..668177c843 100644 --- a/libavcodec/g729postfilter.c +++ b/libavcodec/g729postfilter.c @@ -350,7 +350,7 @@ static int16_t long_term_filter(AudioDSPContext *adsp, int pitch_delay_int, if (tmp > 0) L_temp0 >>= tmp; else - L_temp1 >>= -tmp; + L_temp1 >>= FFMIN(-tmp, 31); /* Check if longer filter increases the values of R'(k). */ if (L_temp1 > L_temp0) { |