Recently, a backdoor [1] was discovered in the xz compression library. 
xz/liblzma [2] are packaged by the OpenCSW project and various other packages 
are depending on the liblzma library [3]. 

I have released today the version 5.6.0r529 to the repository, which is based 
on the 5.2.9. This is the last release before Jian Tian got active in the xz 
project [4] (Thanks to Jeffrey Walton for the hint). Be aware that the 5.2.9 
release might contain other security related issues. 

The downgrade might break ABIs to other packages and we are currently 
verifying, if any packages are affected by the downgrade.

I am constantly monitoring the current development about xz and I will update 
the package accordingly.

[1] https://www.openwall.com/lists/oss-security/2024/03/29/4 
<https://www.openwall.com/lists/oss-security/2024/03/29/4>
[2] https://www.opencsw.org/packages/CSWxz/ 
<https://www.opencsw.org/packages/CSWxz/>
[3] https://www.opencsw.org/packages/liblzma5/ 
<https://www.opencsw.org/packages/liblzma5/>
[4] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024#5 
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1068024#5>




Regards

Ihsan

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