ffmpeg | branch: release/5.0 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Sep 18 15:06:25 2022 +0200| [626094b9d34edb2d83cb6ba17fcb10083e0be55c] | committer: Michael Niedermayer
avformat/rmdec: check tag_size Fixes: signed integer overflow: -2147483648 - 8 cannot be represented in type 'int' Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_RM_fuzzer-6598073725353984 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 2cb7ee8a36bddd3425897135db514ca62fec6e44) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=626094b9d34edb2d83cb6ba17fcb10083e0be55c --- libavformat/rmdec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavformat/rmdec.c b/libavformat/rmdec.c index b0a38bee83..dbbc5d5466 100644 --- a/libavformat/rmdec.c +++ b/libavformat/rmdec.c @@ -564,6 +564,8 @@ static int rm_read_header(AVFormatContext *s) } tag_size = avio_rb32(pb); + if (tag_size < 0) + return AVERROR_INVALIDDATA; avio_skip(pb, tag_size - 8); for(;;) { _______________________________________________ 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".
