apple patched macOS 10.11, 10.12, and 10.13
Please don't insist that everyone update to mac os high sierra 10.13 if they don't want to do so as 10.11 and 10.12 both appear to have been patched back on Dec 6. If you look at the kernel updates, there is a new one added/updated today that indicates the 2017-002 update for 10.12 and the 2017-005 updates for 10.11 (along with 10.13.2 for high sierra) all fix the Meltdown vulnerability aka CVE-2017-5754.
NONE of the entries list any fixes for the other two Spectre vulnerabilities -- CVE-2017-5753 or CVE-2017-5715. There have been no other new security updates listed on the Apple support site.
Reference (all Apple security updates) -- https://support.apple.com/en-us/HT201222
Reference (with fixes listed for CVE-2017-5754) -- https://support.apple.com/en-us/HT208331
"Kernel
Available for: macOS High Sierra 10.13.1, macOS Sierra 10.12.6, OS X El Capitan 10.11.6
...
Entry added January 4, 2018"
Biting the hand that feeds IT
