There are literally mails in that list pointing out that commits made it to stable. At least read the damn thing before repeating the professor's/student's nonsense lies.
The mails in the pointed-to threads indicate that commits by those UMin people made it to stable; it does not say that commits which introduce bugs made it to stable - it is following a decision/suggestion to back out all patches by these people to the kernel.
There is further indication that the patches to revert are not mostly/not at all vulnerability-introducing patches in a message by "Steve" which says:
> The one patch from Greg's reverts that affects my code was actually a legitimate fix
So, again, while it is still theoretically possible that vulnerabilities were introduced into stable, that is not known to be the case.
There is further indication that the patches to revert are not mostly/not at all vulnerability-introducing patches in a message by "Steve" which says:
> The one patch from Greg's reverts that affects my code was actually a legitimate fix
So, again, while it is still theoretically possible that vulnerabilities were introduced into stable, that is not known to be the case.