ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Apr 25 20:01:03 2021 +0200| [acfce11c48a1d19d16b9cef798e9350e44581cd5] | committer: Michael Niedermayer
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 <mich...@niedermayer.cc> (cherry picked from commit 1ca00b5e44f21840b608e238fa135a1aab6e576b) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=acfce11c48a1d19d16b9cef798e9350e44581cd5 --- libavformat/nutdec.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavformat/nutdec.c b/libavformat/nutdec.c index fbecf71328..58a74612a4 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') { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
