Sounds like Verifone is one of the GPL violators. They are known for being "open" except when you want to innovate without permission.

http://global.verifone.com/products/software/v-os/ - Says its Linux Based.

http://www.verifone.com/products/hardware/multimedia/ - Have an MX 900 series of products.

http://www.verifone.com/products/hardware/petro-pos-systems/ - Have a Petro series of Products

NYSE:PAY - are a multi-billion dollar company.

Employee asking for help: https://forums.grsecurity.net/viewtopic.php?f=3&t=3938&p=139...

GRsec saying its verifone: https://twitter.com/grsecurity/status/450995354972864513

Thread indicating they are using an old unmaintained kernel: https://twitter.com/grsecurity/status/424914478912651264

Industry called out specifically: "Not only has the entire embedded industry as a whole not contributed a single dime toward our continued development and maintenance (despite our work being critical to the security of the millions of devices using our code: streaming media players, credit card processing systems, etc), the companies we've identified have actively violated the GPL and even our trademark. These transgressions have continued despite their awareness and our legal action."