On Tue, 20 Jun 2017 17:08:09 +0100 Patrick O'Callaghan <pocallaghan@xxxxxxxxx> wrote: > Full details are in the report already cited, but briefly the fix > causes each page of the new stack frame to be probed to make sure it > doesn't overlap with the guard page (a write-protected page created to > prevent stack and heap from running into each other). The exploit > consisted in jumping over the guard page so as not to trigger a trap, > and the patch cuts off that line of attack at the expense of some > extra instruction cycles. I bit the bullet, went here https://koji.fedoraproject.org/koji/buildinfo?buildID=909756 to get the appropriate patched glibc packages for my F25 system, installed them using dnf -C, and rebooted. I haven't noticed any performance differences, but I haven't been stressing my system. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
