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| author | Michael Niedermayer <michael@niedermayer.cc> | 2022-09-18 14:47:25 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2022-10-09 21:33:09 +0200 |
| commit | 8ab83a7714f90b24670fd43652274f3e0a09a96f (patch) | |
| tree | 2c312ec0f73fcb4518a397a7b907c89520cefdb0 | |
| parent | a3169bd84330b2afc5379feb5e0188b39628f7fd (diff) | |
| download | ffmpeg-8ab83a7714f90b24670fd43652274f3e0a09a96f.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 855214a451..3ac9cb6b53 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); |