Home page logo
/

oss-sec logo oss-sec mailing list archives

Re: CVE Request -- kernel: nfs4_getfacl decoding kernel oops
From: Kurt Seifried <kseifried () redhat com>
Date: Fri, 11 Nov 2011 21:36:20 -0700

On 11/11/2011 09:48 AM, Petr Matousek wrote:
"nfs4_getfacl decoding causes a kernel Oops when a server returns more
than 2 GETATTR bitmap words in response to the FATTR4_ACL attribute
request.

While the NFS client only asks for one attribute (FATTR4_ACL) in the
first bitmap word, the NFSv4 protocol allows for the server to return
unbounded bitmaps (more than two)."

Upstream commit:
e5012d1f3861d18c7f3814e757c1c3ab3741dbcd - incomplete, handles only the
case when 2 words are expected and 3 are returned

Proposed complete upstream patch:
http://www.spinics.net/lists/linux-nfs/msg25288.html

Reference:
https://bugzilla.redhat.com/show_bug.cgi?id=747106

Credit: Andy Adamson

Thanks,
Please use CVE-2011-4131 for this issue

-- 

-Kurt Seifried / Red Hat Security Response Team


  By Date           By Thread  

Current thread:
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]
AlienVault