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Re: CVE-2011-4324 kernel: nfsv4: mknod(2) DoS
From: Solar Designer <solar () openwall com>
Date: Mon, 6 Feb 2012 13:22:01 +0400

On Thu, Nov 24, 2011 at 09:40:42AM +0800, Eugene Teo wrote:
This only affects the Linux kernel as shipped with Red Hat Enterprise
Linux 5. It is possible to trigger the BUG() in fs/nfs/nfs4xdr.c on a
NFSv4 mount. This patch fixed the problem, although we only backported
the relevant parts of the patch,
http://git.kernel.org/linus/dc0b027dfadfcb8a5504f7d8052754bf8d501ab9.

https://bugzilla.redhat.com/CVE-2011-4324

Assuming that the fix for this one is correct and sufficient (and it
appears to be), this is definitely no worse than a DoS. :-)

-                       BUG();
+                       WRITE32(0);

Alexander


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