rastertoepson filter crashes with paper size A6

[Frank Polte]

There is/was a buffer boundary problem in the rastertoepson filter coming with cups, which only affects A6 paper size on any Linux.

The filter crashes at the end of the first page and leaves the dot matrix printer in an non-reseted state. This leaves to several problems later.

Because it is a Memory Management Bug and CUPS is a security sensitive package, this may even lead to security issues.

I already filed the bug upstream and there it was fixed within one week.

https://github.com/apple/cups/issues/5323

Please backport the fixes:
https://github.com/apple/cups/commit/0dd6c36be918fe1d3c216a1c168277f37908c465
and
https://github.com/apple/cups/commit/7e041a5e5569fdb339906eeb00e6706d562e228a

to the cups package.

Any information and files needed are in the github issue mentioned above.