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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-01-31 17:00:38 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-17 21:34:53 +0200 |
| commit | 3067d50620d37fc021f4608bc4337d3f854146ef (patch) | |
| tree | 280dbb3411f715a67e9af178824e3caa6270e5de /libavformat | |
| parent | 4518df79378d3429948409cee696f52d13131a3c (diff) | |
| download | ffmpeg-3067d50620d37fc021f4608bc4337d3f854146ef.tar.gz | |
avformat/samidec: Sanity check pts
Fixes: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long'
Fixes: 29743/clusterfuzz-testcase-minimized-ffmpeg_dem_SAMI_fuzzer-5499256859394048
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 2014b0135293c41d261757bfa1aaba51653bab8e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/samidec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/samidec.c b/libavformat/samidec.c index 948e1ed8b1..c4ecbac3e5 100644 --- a/libavformat/samidec.c +++ b/libavformat/samidec.c @@ -89,6 +89,11 @@ static int sami_read_header(AVFormatContext *s) const char *p = ff_smil_get_attr_ptr(buf.str, "Start"); sub->pos = pos; sub->pts = p ? strtol(p, NULL, 10) : 0; + if (sub->pts <= INT64_MIN/2 || sub->pts >= INT64_MAX/2) { + res = AVERROR_PATCHWELCOME; + goto end; + } + sub->duration = -1; } } |