Date: Fri, 11 Oct 2013 15:37:32 -0700 From: ebiederm@...ssion.com (Eric W. Biederman) To: Ryan Mallon <rmallon@...il.com> Cc: George Spelvin <linux@...izon.com>, joe@...ches.com, akpm@...ux-foundation.org, dan.j.rosenberg@...il.com, eldad@...refinery.com, jgunthorpe@...idianresearch.com, jkosina@...e.cz, keescook@...omium.org, kernel-hardening@...ts.openwall.com, linux-kernel@...r.kernel.org, viro@...iv.linux.org.uk, rusty@...tcorp.com.au Subject: Re: [PATCH v3a] vsprintf: Check real user/group id for %pK Ryan Mallon <rmallon@...il.com> writes: > The only remaining problem is kernel/module.c:module_sect_show() which > is used to write the sysfs files in /sys/module/<modname>/sections/. > Those files are actually are really good target for leaking %pK values > via setuid binaries. The problem is that the module_sect_show() function > isn't passed information about who opened the sysfs file. I don't think > this information is available in general for sysfs files either. Also, > I can't actually see how module_sect_show() gets called? > > I'm a bit stuck on how to solve this. Any ideas? I haven't yet had a chance to review the patches but there are patches to make sysfs files seq files in Greg's driver core tree. Eric
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.