Date: Sun, 26 Jul 2009 11:18:05 +0800 From: Eugene Teo <eugene@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: md raid null ptr dereference (when sysfs is writable) Marcus Meissner wrote: > Hi, > > http://xorl.wordpress.com/2009/07/21/linux-kernel-md-driver-null-pointer-dereference/ > > 2.6.30 stable: > http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.30.y.git;a=commit;h=3c92900d9a4afb176d3de335dc0da0198660a244 > mainline: > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b8d966efd9a46a9a35beac50cbff6e30565125ef > > While not directly exploitable, its just needs write access to the sysfs files > to get exploited, so I guess this warrants a CVE number. Note that the default permission for this sysfs file is 644. It can be triggered if you are a local privileged user. Thanks, Eugene
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