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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 22:54:05 +0200 |
| commit | 34e46dc429119e54437d04f474423f2dcbd5bd1f (patch) | |
| tree | eff34d74731c80796cef3b60b2792c2c6f9e6a7f | |
| parent | 6cc025a76a795dc4ae003d1a4c1411682ee96062 (diff) | |
| download | ffmpeg-34e46dc429119e54437d04f474423f2dcbd5bd1f.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>
(cherry picked from commit 2c146406eac06f3d3cd3d981c29e7affd834cb4d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -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 0b04aaad3e..7bde16be9c 100644 --- a/libavformat/nutdec.c +++ b/libavformat/nutdec.c @@ -244,6 +244,11 @@ 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); |