CVE_2015_1692-1 is that an UNIX / Linux day zero exploit number?

I can't imagine they number day zero exploits all through the open source software, like a CVE number can be for GIMP, LIBREOFFICE, (Ubuntu) LINUX, FireFox etc.

Could be an exploit of LINUX through FireFox, since its an HTML exploit?

One LINUX exploit I know has an CVE number (the exploit also has code name "Ghost")

https://securityintelligence.com/gho...or-for-attack/