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Date: Tue, 15 Nov 2011 14:54:08 -0800 From: Greg KH <greg@...ah.com> To: David Howells <dhowells@...hat.com> Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org, linux-security-module@...r.kernel.org, keyrings@...ux-nfs.org, linux-kernel@...r.kernel.org, Jeff Layton <jlayton@...hat.com>, Neil Horman <nhorman@...hat.com>, Steve Dickson <steved@...hat.com>, James Morris <jmorris@...ei.org> Subject: Re: [PATCH] KEYS: Fix a NULL pointer deref in the user-defined key type On Tue, Nov 15, 2011 at 10:09:45PM +0000, David Howells wrote: > Fix a NULL pointer deref in the user-defined key type whereby updating a > negative key into a fully instantiated key will cause an oops to occur when the > code attempts to free the non-existent old payload. > > This results in an oops that looks something like the following: > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 > IP: [<ffffffff81085fa1>] __call_rcu+0x11/0x13e > PGD 3391d067 PUD 3894a067 PMD 0 > Oops: 0002 [#1] SMP > CPU 1 > Modules linked in: > > Pid: 4354, comm: keyctl Not tainted 3.1.0-fsdevel+ #1140 /DG965RY Ah, so this patch should also go into the 3.1-stable tree? Any older ones as welL? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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