oss-security - Re: CVE request -- kernel: fuse: check size of FUSE_NOTIFY_INVAL

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Message-ID: <87834720.1022071.1315591310297.JavaMail.root@zmail01.collab.prod.int.phx2.redhat.com>
Date: Fri, 9 Sep 2011 14:01:50 -0400 (EDT)
From: Josh Bressers <bressers@...hat.com>
To: oss-security@...ts.openwall.com
Cc: coley@...us.mitre.org
Subject: Re: CVE request -- kernel: fuse: check size of
 FUSE_NOTIFY_INVAL_ENTRY message

Please use CVE-2011-3353

Thanks.

-- 
    JB


----- Original Message -----
> FUSE_NOTIFY_INVAL_ENTRY didn't check the length of the write so the
> message processing could overrun and result in a BUG_ON() in
> fuse_copy_fill().
> 
> User able to mount FUSE filesystems can use this flaw to crash the
> system.
> 
> References:
> http://permalink.gmane.org/gmane.linux.kernel.commits.head/313266
> http://sourceforge.net/mailarchive/forum.php?thread_name=87liut4i7w.fsf%40tucsk.pomaz.szeredi.hu&forum_name=fuse-devel
> 
> Upstream fix:
> c2183d1e9b3f313dd8ba2b1b0197c8d9fb86a7ae
> 
> Thanks,
> --
> Petr Matousek / Red Hat Security Response Team

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