ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Wed Jul 23 13:25:06 2025 +0200| [c6cb3ab7ff5a66db5d86f270d7c68547dac4da6a] | committer: Michael Niedermayer
avformat/mxfdec: Ensure klv->key is initialized Fixes: read of uninitialized memory Fixes: 391916474/clusterfuzz-testcase-minimized-ffmpeg_dem_MXF_fuzzer-4935250956845056 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=c6cb3ab7ff5a66db5d86f270d7c68547dac4da6a --- libavformat/mxfdec.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index 0eed13d850..184e97256c 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -491,7 +491,9 @@ static int klv_read_packet(MXFContext *mxf, KLVPacket *klv, AVIOContext *pb) return AVERROR_INVALIDDATA; memcpy(klv->key, mxf_klv_key, 4); - avio_read(pb, klv->key + 4, 12); + int ret = ffio_read_size(pb, klv->key + 4, 12); + if (ret < 0) + return ret; length = klv_decode_ber_length(pb, &llen); if (length < 0) return length; _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
