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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-06-19 23:17:31 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:11:55 +0200 |
| commit | b5c293030a44f20e933aa0c75af812f4af761b46 (patch) | |
| tree | 3f599162dea72a535cc77d95d54a1f2731d5484e | |
| parent | dc94ace7882367fc7b83c35a0633b7b8a475963e (diff) | |
| download | ffmpeg-b5c293030a44f20e933aa0c75af812f4af761b46.tar.gz | |
avcodec/alsdec: Fix undefined behavior in decode_rice()
Fixes: left shift of 72 by 26 places cannot be represented in type 'int'
Fixes: 15279/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALS_fuzzer-5700665621348352
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 51f6870c37cc29e1ea7e0c66df2fe505938b7561)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/alsdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/alsdec.c b/libavcodec/alsdec.c index 2ad1470f96..d1141f67a9 100644 --- a/libavcodec/alsdec.c +++ b/libavcodec/alsdec.c @@ -488,7 +488,7 @@ static void parse_bs_info(const uint32_t bs_info, unsigned int n, static int32_t decode_rice(GetBitContext *gb, unsigned int k) { int max = get_bits_left(gb) - k; - int q = get_unary(gb, 0, max); + unsigned q = get_unary(gb, 0, max); int r = k ? get_bits1(gb) : !(q & 1); if (k > 1) { |