ons 2025-07-23 klockan 13:45 +0200 skrev Michael Niedermayer: > 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 <mich...@niedermayer.cc> > --- > libavformat/mxfdec.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c > index 0eed13d850d..184e97256cd 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;
ret != 12 is better. If it's non-negative then return AVERROR_EOF /Tomas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
