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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-02 23:14:22 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-05 20:34:33 +0300 |
| commit | 11f01ad26c997ac3f6fd586a8a6dbf1def8e4311 (patch) | |
| tree | c8122bcbab3023fa4f588186076bca7c1a42c1d1 /libavcodec | |
| parent | 3a3c02be9a4d568df191e669805958f0fa78e5b5 (diff) | |
avcodec/loco: Check for end of input in pixel decode
Fixes: Timeout (100sec -> 5sec)
Fixes: 15509/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_LOCO_fuzzer-5724297261219840
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 8305a4509af2908d88bb623deb816fdaa8056c83)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/loco.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/loco.c b/libavcodec/loco.c index e8c62b8178..5fb414b411 100644 --- a/libavcodec/loco.c +++ b/libavcodec/loco.c @@ -88,6 +88,8 @@ static inline int loco_get_rice(RICEContext *r) loco_update_rice_param(r, 0); return 0; } + if (get_bits_left(&r->gb) < 1) + return INT_MIN; v = get_ur_golomb_jpegls(&r->gb, loco_get_rice_param(r), INT_MAX, 0); loco_update_rice_param(r, (v + 1) >> 1); if (!v) { @@ -163,6 +165,8 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh /* restore all other pixels */ for (i = 1; i < width; i++) { val = loco_get_rice(&rc); + if (val == INT_MIN) + return -1; data[i] = loco_predict(&data[i], stride) + val; } data += stride; |