PSA: OpenJPEG package update breaks Aperio 33003 decoding

Benjamin Gilbert bgilbert at
Sun Jan 5 00:02:10 EST 2014

Hi all,

In response to CVE-2013-6045, Linux distributions are pushing out new 
OpenJPEG packages which fail to properly decode YCbCr images with chroma 
subsampling.  With the updated package installed, reading an Aperio 
33003 slide produces the following error:

> OpenJPEG error: Error decoding tile. Component 1 contains only
> 32768 blocks while component 0 has 65536 blocks

At the moment, it appears this bug has made its way into Debian, the 
Ubuntu LTS releases, and RHEL 6.

For now, you can avoid this issue by downgrading, or not upgrading, your 
OpenJPEG package.  Bug reports have been filed for Debian and RHEL:

--Benjamin Gilbert

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