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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-09-06 10:55:26 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-01 12:49:26 +0200 |
| commit | 91e6e96640797efccd2c3ab3ab790cba231d6cd6 (patch) | |
| tree | 108f87730c005414041bb84c024d9e8179c1ac6b | |
| parent | 69000f77bc8c3ae4ba6fcdcce372dfb8bf7a985d (diff) | |
| download | ffmpeg-91e6e96640797efccd2c3ab3ab790cba231d6cd6.tar.gz | |
avcodec/smacker: Fix integer overflow in signed int multiply in SMK_BLK_FILL
Fixes: signed integer overflow: 238 * 16843009 cannot be represented in type 'int'
Fixes: 16958/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SMACKER_fuzzer-5193905355620352
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 033d2c4884eca3f4f80047bff93255b0cc4fa7a3)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/smacker.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/smacker.c b/libavcodec/smacker.c index 2d20be9c10..843b73d33b 100644 --- a/libavcodec/smacker.c +++ b/libavcodec/smacker.c @@ -529,7 +529,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, while(run-- && blk < blocks){ uint32_t col; out = smk->pic->data[0] + (blk / bw) * (stride * 4) + (blk % bw) * 4; - col = mode * 0x01010101; + col = mode * 0x01010101U; for(i = 0; i < 4; i++) { *((uint32_t*)out) = col; out += stride; |