diff options
author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-17 22:19:53 +0300 |
---|---|---|
committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-25 14:51:59 +0300 |
commit | 5ee0beb7997bc08d1926054c597d87f490971e1f (patch) | |
tree | e29c03463fe92596206ef1b66a709cebf1452674 | |
parent | b9b148ef87541b0eb699cb0baa861e262c9e8943 (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 a7be29a469..7ced92cf76 100644 --- a/libavformat/ape.c +++ b/libavformat/ape.c @@ -301,6 +301,8 @@ 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) { |