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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-11 23:22:57 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-05 13:43:08 +0300 |
| commit | 425c0eafaef85270af0d7474b12e127e97d6289c (patch) | |
| tree | fa2311ddfd5f13fedbe1762b6346eb66d4fa9de4 /libavcodec/mpeg4videodec.c | |
| parent | c11634ad7599d13e71c6e9053267051b4f14a3e6 (diff) | |
avcodec/mpeg4videodec: Fix 2 integer overflows in get_amv()
Fixes: signed integer overflow: -144876608 * 16 cannot be represented in type 'int'
Fixes: 22782/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-6039584977977344
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 e361785ee05cc75d3caacf2f254160b0336f5358)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/mpeg4videodec.c')
| -rw-r--r-- | libavcodec/mpeg4videodec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index d2340d15ae..2129c44490 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -549,7 +549,7 @@ static inline int get_amv(Mpeg4DecContext *ctx, int n) dy -= 1 << (shift + a + 1); else dx -= 1 << (shift + a + 1); - mb_v = s->sprite_offset[0][n] + dx * s->mb_x * 16 + dy * s->mb_y * 16; + mb_v = s->sprite_offset[0][n] + dx * s->mb_x * 16U + dy * s->mb_y * 16U; sum = 0; for (y = 0; y < 16; y++) { |