Gentoo Archives: gentoo-user

From: Rich Freeman <rich0@g.o>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: old kernels are installed during the upgrade
Date: Fri, 05 Jan 2018 13:08:24
Message-Id: CAGfcS_=Cib5bS97zK49fb5sMzWegwAN26wPUA6UcQK78eB=R6g@mail.gmail.com
In Reply to: Re: [gentoo-user] Re: old kernels are installed during the upgrade by Walter Dnes
1 On Fri, Jan 5, 2018 at 7:34 AM, Walter Dnes <waltdnes@××××××××.org> wrote:
2 >
3 > I wonder if it's possible to compile a web browser with protection
4 > against the exploits, but turn it off for other apps. That would
5 > protect against external attacks, while not hurting local app speed.
6 >
7
8 There are three exploits, all requiring different solutions. Only
9 exploit 3 has a solution which impacts speed.
10
11 Trying to fix exploit 3 in the browser seems dubious. You'd need to
12 detect code patterns that could be trying to trigger the exploit
13 before they're run, because the CPU itself isn't going to provide any
14 protection here. Exploit 3 is the only exploit that doesn't require
15 some kind of underlying vulnerability in a piece of software that is
16 being attacked (in addition to the CPU vulnerability).
17
18 Exploits 1/2 do require fixes in the browser already, but those don't
19 significantly impact performance. Those fixes are also still being
20 worked on.
21
22 --
23 Rich