Date: Wed, 20 Sep 2017 13:18:04 +0200 From: Yann Droneaud <ydroneaud@...eya.com> To: Solar Designer <solar@...nwall.com>, riel@...hat.com Cc: linux-kernel@...r.kernel.org, danielmicay@...il.com, tytso@....edu, keescook@...omium.org, hpa@...or.com, luto@...capital.net, mingo@...nel.org, x86@...nel.org, linux-arm-kernel@...ts.infradead.org, catalin.marinas@....com, linux-sh@...r.kernel.org, ysato@...rs.sourceforge.jp, kernel-hardening@...ts.openwall.com Subject: Re: [PATCH v2 0/5] stackprotector: ascii armor the stack canary Hi, Le mardi 19 septembre 2017 à 19:16 +0200, Solar Designer a écrit : > > We could put/require a NUL in the middle of the canary, > but with the full canary being only 64-bit at most that would also > make some attacks easier. > Are you suggesting to randomly select which byte to set to 0 in each canary ? Regards. -- Yann Droneaud OPTEYA
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