ffmpeg | branch: release/4.3 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Feb 8 14:29:01 2021 +0100| [f678e8196c32c4678f942bf8d8f928a8aed0eed7] | committer: Michael Niedermayer
avformat/wtvdec: Check len in parse_chunks() to avoid overflow Fixes: signed integer overflow: 2147483647 + 7 cannot be represented in type 'int' Fixes: 30084/clusterfuzz-testcase-minimized-ffmpeg_dem_WTV_fuzzer-6192261941559296 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Peter Ross <pr...@xvid.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 5552ceaf568915e668679f9581e07eb5507cafc4) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f678e8196c32c4678f942bf8d8f928a8aed0eed7 --- libavformat/wtvdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c index 77908e6392..aa6ff78c4b 100644 --- a/libavformat/wtvdec.c +++ b/libavformat/wtvdec.c @@ -794,7 +794,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p ff_get_guid(pb, &g); len = avio_rl32(pb); - if (len < 32) { + if (len < 32 || len > INT_MAX - 7) { int ret; if (avio_feof(pb)) return AVERROR_EOF; _______________________________________________ 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".
