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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-12-02 21:53:22 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-12-07 23:38:06 +0100 |
| commit | b2169c8bcc4306b68ae67f71e4723a22c695266a (patch) | |
| tree | 3b81d3857ff051fe1781c0f8b21bcd49a8f16b6a | |
| parent | 3a6140e4cf8955cf9314d6f0b0f6be3e18846fa7 (diff) | |
| download | ffmpeg-b2169c8bcc4306b68ae67f71e4723a22c695266a.tar.gz | |
avcodec/diracdsp: Fix integer overflow in PUT_SIGNED_RECT_CLAMPED()
Fixes: runtime error: signed integer overflow: 2147483646 + 2048 cannot be represented in type 'int'
Fixes: 4479/clusterfuzz-testcase-minimized-6529894147162112
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 610dd74502a58e8bb0f1d8fcbc7015f86b78d70e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/diracdsp.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/libavcodec/diracdsp.c b/libavcodec/diracdsp.c index 8bc79b788c..2dd56f83f3 100644 --- a/libavcodec/diracdsp.c +++ b/libavcodec/diracdsp.c @@ -159,10 +159,10 @@ static void put_signed_rect_clamped_ ## PX ## bit_c(uint8_t *_dst, int dst_strid int32_t *src = (int32_t *)_src; \ for (y = 0; y < height; y++) { \ for (x = 0; x < width; x+=4) { \ - dst[x ] = av_clip_uintp2(src[x ] + (1 << (PX - 1)), PX); \ - dst[x+1] = av_clip_uintp2(src[x+1] + (1 << (PX - 1)), PX); \ - dst[x+2] = av_clip_uintp2(src[x+2] + (1 << (PX - 1)), PX); \ - dst[x+3] = av_clip_uintp2(src[x+3] + (1 << (PX - 1)), PX); \ + dst[x ] = av_clip_uintp2(src[x ] + (1U << (PX - 1)), PX); \ + dst[x+1] = av_clip_uintp2(src[x+1] + (1U << (PX - 1)), PX); \ + dst[x+2] = av_clip_uintp2(src[x+2] + (1U << (PX - 1)), PX); \ + dst[x+3] = av_clip_uintp2(src[x+3] + (1U << (PX - 1)), PX); \ } \ dst += dst_stride >> 1; \ src += src_stride >> 2; \ |