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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 22:19:53 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-26 17:51:00 +0300 |
| commit | 080c074c254a9687b787488a39c257b15a1d923c (patch) | |
| tree | fda8e33b27e0bfb54afac3e8603ae2add2dd1b6f | |
| parent | 2cdc8254ebdc6e37bff73629a0065129c1d47d03 (diff) | |
avformat/ape: Check frames size
Fixes: signed integer overflow: 9223372036854775806 + 3 cannot be represented in type 'long'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_APE_fuzzer-6389264140599296
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 d0349c9929e2891c90011a83152624d5cf18e628)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/ape.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavformat/ape.c b/libavformat/ape.c index 92bf6360ef..58d4f7cfa8 100644 --- a/libavformat/ape.c +++ b/libavformat/ape.c @@ -332,6 +332,8 @@ static int ape_read_header(AVFormatContext * s) ape->frames[i].pos -= ape->frames[i].skip; ape->frames[i].size += ape->frames[i].skip; } + if (ape->frames[i].size > INT_MAX - 3) + return AVERROR_INVALIDDATA; ape->frames[i].size = (ape->frames[i].size + 3) & ~3; } if (ape->fileversion < 3810) { |