Scientific Linux Security Update : kernel on SL4.x i386/x86_64

This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

This update fixes the following security issues :

- a flaw was found in the CIFSSMBWrite() function in the
Linux kernel Common Internet File System (CIFS)
implementation. A remote attacker could send a specially
crafted SMB response packet to a target CIFS client,
resulting in a kernel panic (denial of service).
(CVE-2010-2248, Important)

- buffer overflow flaws were found in the Linux kernel's
implementation of the server-side External Data
Representation (XDR) for the Network File System (NFS)
version 4. An attacker on the local network could send a
specially crafted large compound request to the NFSv4
server, which could possibly result in a kernel panic
(denial of service) or, potentially, code execution.
(CVE-2010-2521, Important)

This update also fixes the following bug :

- the rpc_call_async() function in the SUN Remote
Procedure Call (RPC) subsystem in the Linux kernel had a
reference counting bug. In certain situations, some
Network Lock Manager (NLM) messages may have triggered
this bug on NFSv2 and NFSv3 servers, leading to a kernel
panic (with 'kernel BUG at fs/lockd/host.c:[xxx]!'
logged to '/var/log/messages'). (BZ#612962)

The system must be rebooted for this update to take effect.

See also :

http://www.nessus.org/u?141205b0
https://bugzilla.redhat.com/show_bug.cgi?id=612962

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60831 ()

Bugtraq ID:

CVE ID: CVE-2010-2248
CVE-2010-2521