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authorMichael Niedermayer <michael@niedermayer.cc>2018-06-05 02:09:59 +0200
committerMichael Niedermayer <michael@niedermayer.cc>2018-07-10 01:52:56 +0200
commitea0734e3f011964e12da5f7d8dacf4a86670cbf0 (patch)
treea6f125c4b30d01d96637b71c67ed43851c641e9c
parent4c3a7aaea8ba76225780bd867a053bb0084503d6 (diff)
downloadffmpeg-ea0734e3f011964e12da5f7d8dacf4a86670cbf0.tar.gz
avcodec/truemotion2: Fix overflow in tm2_apply_deltas()
Fixes: signed integer overflow: 1077952576 + 1077952576 cannot be represented in type 'int' Fixes: 7712/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_TRUEMOTION2_fuzzer-5056281753681920 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 79c6047c3668c639f717b3a7001a34dddba0ede2) Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
-rw-r--r--libavcodec/truemotion2.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/truemotion2.c b/libavcodec/truemotion2.c
index dbcef42462..d290326bf5 100644
--- a/libavcodec/truemotion2.c
+++ b/libavcodec/truemotion2.c
@@ -443,7 +443,7 @@ static inline int GET_TOK(TM2Context *ctx,int type)
/* common operations - add deltas to 4x4 block of luma or 2x2 blocks of chroma */
static inline void tm2_apply_deltas(TM2Context *ctx, int* Y, int stride, int *deltas, int *last)
{
- int ct, d;
+ unsigned ct, d;
int i, j;
for (j = 0; j < 4; j++){