Intel isn’t going to patch some of its older CPUs which are vulnerable to the Meltdown and Spectre flaws, according to a fresh update issued by the company.
The first thing to note here is that the processors in question are niche, older models, but this is still a potential fly in the ointment for some folks who are still using the silicon in question.
As the Register reports, the processors which won’t be getting a patch include chips in the Bloomfield, Clarksfield, Gulftown, Harpertown Xeon C0 and E0, Jasper Forest, Penryn, SoFIA 3GR, Wolfdale and Yorkfield families (and Xeon variants).
That means CPUs which run the gamut across Core, Xeon, Pentium, Celeron and Atom chips. For example, the Bloomfield processors in question are high-end first-generation models: the Intel Core Processor Extreme Edition i7-975 and i7-965, and Core i7-920, 930, 940, 950, 960 (alongside Xeon offerings).
There are over 230 affected CPUs in total.
Patch problems
Why aren’t these being patched? Intel gives several reasons, the foremost being that the ‘micro-architectural characteristics’ of these processors mean that it’s not actually possible to patch against Spectre Variant 2.
Intel also notes that there is ‘limited commercially available system software support’ for these chips these days. In other words, the firm’s line of thinking seems to be that even if it did produce a fix, manufacturers would be unlikely to deploy it for products which have effectively fallen by the wayside in terms of support.
A third point that the chip giant makes is that many of the computers running these processors are ‘closed systems’ not connected to the outside world and so unlikely to be exposed to Meltdown and Spectre anyway.
These are fair enough points to make, although the admission that it simply isn’t possible to patch against Spectre for some of Intel’s chips may raise a few eyebrows, and certainly points to how deep this particular vulnerability runs in the silicon.
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