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| author | Michael Niedermayer <michael@niedermayer.cc> | 2023-09-30 00:38:17 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2024-03-26 00:08:25 +0100 |
| commit | d973fcbcc2f944752ff10e6a76b0b2d9329937a7 (patch) | |
| tree | aa8308c6fac75b2abdc342d76c09515747901704 | |
| parent | d384af52261ff01ee35c05d46303d617de5305bb (diff) | |
| download | ffmpeg-d973fcbcc2f944752ff10e6a76b0b2d9329937a7.tar.gz | |
avformat/cafdec: dont seek beyond 64bit
Fixes: signed integer overflow: 64 + 9223372036854775807 cannot be represented in type 'long long'
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6418242730328064
Fixes: 62276/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-6418242730328064
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/cafdec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c index 426c56b9bd..72809fd1de 100644 --- a/libavformat/cafdec.c +++ b/libavformat/cafdec.c @@ -271,7 +271,7 @@ static int read_pakt_chunk(AVFormatContext *s, int64_t size) } } - if (avio_tell(pb) - ccount > size) { + if (avio_tell(pb) - ccount > size || size > INT64_MAX - ccount) { av_log(s, AV_LOG_ERROR, "error reading packet table\n"); return AVERROR_INVALIDDATA; } |