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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-18 14:47:25 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-24 18:28:10 +0200 |
| commit | 2c146406eac06f3d3cd3d981c29e7affd834cb4d (patch) | |
| tree | 230c9ffb7527a5fede4ea7ce5d24dac0b022944f /libavformat | |
| parent | 7124f10c1d521096042ba3c9c519828147f78c46 (diff) | |
| download | ffmpeg-2c146406eac06f3d3cd3d981c29e7affd834cb4d.tar.gz | |
avformat/nutdec: Check fields
Fixes: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_NUT_fuzzer-6566001610719232
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavformat')
| -rw-r--r-- | libavformat/nutdec.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c index 8cc56615ad..24dedc4758 100644 --- a/libavformat/nutdec.c +++ b/libavformat/nutdec.c @@ -245,6 +245,11 @@ static int decode_main_header(NUTContext *nut) for (i = 0; i < 256;) { int tmp_flags = ffio_read_varlen(bc); int tmp_fields = ffio_read_varlen(bc); + if (tmp_fields < 0) { + av_log(s, AV_LOG_ERROR, "fields %d is invalid\n", tmp_fields); + ret = AVERROR_INVALIDDATA; + goto fail; + } if (tmp_fields > 0) tmp_pts = get_s(bc); |