Date: Tue, 7 Nov 2017 13:56:05 +0000 From: David Laight <David.Laight@...LAB.COM> To: "'Tobin C. Harding'" <me@...in.cc>, "kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com> CC: "Jason A. Donenfeld" <Jason@...c4.com>, Theodore Ts'o <tytso@....edu>, Linus Torvalds <torvalds@...ux-foundation.org>, Kees Cook <keescook@...omium.org>, Paolo Bonzini <pbonzini@...hat.com>, Tycho Andersen <tycho@...ker.com>, "Roberts, William C" <william.c.roberts@...el.com>, Tejun Heo <tj@...nel.org>, Jordan Glover <Golden_Miller83@...tonmail.ch>, Greg KH <gregkh@...uxfoundation.org>, Petr Mladek <pmladek@...e.com>, "Joe Perches" <joe@...ches.com>, Ian Campbell <ijc@...lion.org.uk>, "Sergey Senozhatsky" <sergey.senozhatsky@...il.com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <wilal.deacon@....com>, Steven Rostedt <rostedt@...dmis.org>, Chris Fries <cfries@...gle.com>, Dave Weinstein <olorin@...gle.com>, Daniel Micay <danielmicay@...il.com>, Djalal Harouni <tixxdz@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Network Development <netdev@...r.kernel.org>, David Miller <davem@...emloft.net> Subject: RE: [PATCH v4] scripts: add leaking_addresses.pl From: Tobin C. Harding > Sent: 07 November 2017 10:32 > > Currently we are leaking addresses from the kernel to user space. This > script is an attempt to find some of those leakages. Script parses > `dmesg` output and /proc and /sys files for hex strings that look like > kernel addresses. ... Maybe the %p that end up in dmesg (via the kernel message buffer) should be converted to text in a form that allows the code that reads them to substitute alternate text for non-root users? Then the actual addresses will be available to root (who can probably get most by other means) but not to the casual observer. David
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