[ptxdist] libpng security update

[ptxdist] libpng security update

[Alexander Dahl]

Hei hei, 

there are two vulnerabilities in libpng fixed with the versions released
today [1]: CVE-2015-7981, CVE-2015-8126. ptxdist is still on 1.2.50,
however there's a version 1.2.54 in that branch fixing the issues. 

I had a quick look into the differences and stumbled over the patch
coming with ptxdist regarding sysroot handling. It links to a discussion
on sourceforge leading to a 404 now, which actually moved to
https://sourceforge.net/p/libpng/feature-requests/17/ – I see no
solution there, but 1.2.54 has a new parameter for ./configure named
--with-sysroot[=DIR] which probably makes the patch obsolete.

Maybe someone has time for looking into this, should be not too hard to
update to 1.2.54. I would have done, but I'm not sure how to use the
--with-sysroot option in rules/libpng.make … O:-)

Greets
Alex

[1]
http://www.heise.de/security/meldung/Programmbibliothek-libpng-verlangt-nach-Sicherheitsupdates-2922089.html

-- 
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