http://www.pcgamer.com/system-builders-and-oems-recall-botched-intel-spectre-patchs/

As Intel continues to work on a fix for the reboot issue plaguing its botched Spectre microcode patch, several OEMs, including Dell, Acer, and AsRock, have recalled their BIOS patches.

The Spectre and Meltdown issues are composed of three vulnerabilities, each with its own designation in the Critical Exposure and Vulnerability (CVE) list. Meltdown is designated as CVE-2017-5754, while Spectre has two components: CVE-2017-5753 and CVE-2017-5715. Out of the three, CVE-2017-5715 is the only one that requires updates to the CPU microcode, which needs to be implemented through the BIOS.