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avcodec/loco: Fix integer overflow with large values from loco_get_rice()

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Fixes: signed integer overflow: 155 + 2147483647 cannot be represented in type 'int'
Fixes: 23421/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LOCO_fuzzer-5652849097965568

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 3ddc5e1f3cebca25ade54ee68159d305f210bf5f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-06-30 21:11:25 +02:00
parent a86e6a6a98
commit bd2c09a5c5
1 changed files with 1 additions and 1 deletions
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libavcodec/loco.c
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@ -129,7 +129,7 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh
int stride, const uint8_t *buf, int buf_size, int step)
{
RICEContext rc;
int val;
unsigned val;
int ret;
int i, j;