On Fri, May 12, 2017 at 12:30:02PM -0700, Kees Cook wrote: > I'm clearly not explaining things well enough. I shouldn't say > "corruption", I should say "malicious manipulation". The methodology > of attacks against the stack are quite different from the other kinds > of attacks like use-after-free, heap overflow, etc. Being able to > exhaust the kernel stack (either due to deep recursion or unbounded > alloca()) I really hope we don't have alloca() use in the kernel. Do you have evidence to support that assertion? IMHO alloca() (or similar) should not be present in any kernel code because we have a limited stack - we have kmalloc() etc for that kind of thing. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
