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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-30 21:14:28 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2023-10-08 21:36:02 +0200 |
| commit | b3c973acbecb879d4949fecdadd2fdfc08dea42b (patch) | |
| tree | bdd9a57011e2a8f8fc6c6103210b5c32b1b74c1d | |
| parent | 3508b496e195440d0af0203e2822937b8c6f5598 (diff) | |
| download | ffmpeg-b3c973acbecb879d4949fecdadd2fdfc08dea42b.tar.gz | |
avformat/rpl: Check for number_of_chunks overflow
Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int32_t' (aka 'int')
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_RPL_fuzzer-6086131095830528
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-- | libavformat/rpl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/rpl.c b/libavformat/rpl.c index 3ef6fda386..eae0da891b 100644 --- a/libavformat/rpl.c +++ b/libavformat/rpl.c @@ -268,6 +268,9 @@ static int rpl_read_header(AVFormatContext *s) "Video stream will be broken!\n", av_fourcc2str(vst->codecpar->codec_tag)); number_of_chunks = read_line_and_int(pb, &error); // number of chunks in the file + if (number_of_chunks == INT_MAX) + return AVERROR_INVALIDDATA; + // The number in the header is actually the index of the last chunk. number_of_chunks++; |