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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-25 21:01:03 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-06-18 19:58:25 +0300 |
| commit | 1ca00b5e44f21840b608e238fa135a1aab6e576b (patch) | |
| tree | 51c732c8caebe527ba247b7fe23595c401617870 /libavformat/nutdec.c | |
| parent | a1a277926b49dad60d9e78c6c7a8c6b5d0d6d7c9 (diff) | |
avformat/nutdec: Check tmp_size
Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_NUT_fuzzer-6739990530883584
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/nutdec.c')
| -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 e709257135..fc5a6a1542 100644 --- a/libavformat/nutdec.c +++ b/libavformat/nutdec.c @@ -286,6 +286,11 @@ static int decode_main_header(NUTContext *nut) ret = AVERROR_INVALIDDATA; goto fail; } + if (tmp_size < 0 || tmp_size > INT_MAX - count) { + av_log(s, AV_LOG_ERROR, "illegal size\n"); + ret = AVERROR_INVALIDDATA; + goto fail; + } for (j = 0; j < count; j++, i++) { if (i == 'N') { |