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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-25 16:37:57 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-12-28 00:25:35 +0100 |
| commit | aee0f320ac7f45143d8dc87b5b0f79d264ed40eb (patch) | |
| tree | 59e10c3ef244ccf187a59e51cb489529b56f1353 | |
| parent | 64a04fc165d453fe49906b228ac16385eda28564 (diff) | |
| download | ffmpeg-aee0f320ac7f45143d8dc87b5b0f79d264ed40eb.tar.gz | |
avcodec/dts2pts_bsf: Avoid poc overflows in cmp_find()
Fixes: signed integer overflow: -2147483648 - 5 cannot be represented in type 'int'
Fixes: 54242/clusterfuzz-testcase-minimized-ffmpeg_BSF_DTS2PTS_fuzzer-472928339243827
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dts2pts_bsf.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/dts2pts_bsf.c b/libavcodec/dts2pts_bsf.c index 48612e59db..263514faad 100644 --- a/libavcodec/dts2pts_bsf.c +++ b/libavcodec/dts2pts_bsf.c @@ -90,9 +90,11 @@ static int cmp_insert(const void *key, const void *node) static int cmp_find(const void *key, const void *node) { - int ret = ((const DTS2PTSFrame *)key)->poc - ((const DTS2PTSNode *) node)->poc; + const DTS2PTSFrame * key1 = key; + const DTS2PTSNode *node1 = node; + int ret = FFDIFFSIGN(key1->poc, node1->poc); if (!ret) - ret = ((const DTS2PTSFrame *)key)->gop - ((const DTS2PTSNode *) node)->gop; + ret = key1->gop - node1->gop; return ret; } |