Decoding of 11025 1.0rc3 encoded streams with 1.0 final decoder seems to over-read

I'm a developer/packager for Mandrake. We have a bug in "tuxpuck-0.7.91", a
segfault appearing in the "free" call from libvorbis. After a little
investigation, it seems that this stream:

-=-=---=-=---=-=---=-=--
Processing file "nock.ogg"...

New logical stream (#1, serial: 62f352bc): type vorbis
Vorbis headers parsed for stream 1, information follows...
Version: 0
Vendor: Xiphophorus libVorbis I 20011231 (1.0 rc3)
Channels: 1
Rate: 11025

Nominal bitrate not set
Upper bitrate not set
Lower bitrate not set
Vorbis stream 1:
        Total data length: 721 bytes
        Playback length: 0m:00s
        Average bitrate: 49.798121 kbps
Logical stream 1 ended
-=-=---=-=---=-=---=-=--

which reports a "ov_pcm_total(vf, -1) * channels * 2" of 2554 bytes, when
getting read by ov_read, sends back to the caller 256 bytes, then 256, 256, 1152
and 2048, which makes a total of 3968 bytes - then tuxpuck crashes because
it malloc'ed only 2554 bytes in its buffer.

This bug seems confirmed by using "oggdec" which doesn't segfault but ends
reporting it was at 155.0% of the stream.

We're using the final 1.0 release of Ogg Vorbis (since Sun Jul 21 2002). I've
tried to query this bug database for a duplicate but didn't find one, sorry if
this has already been fixed in the CVS or already reported.

I've put the ogg file here for your convenience though it's in official tuxpuck
package:

http://people.mandrakesoft.com/~gc/files/nock.ogg