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The remote Scientific Linux host is missing one or more security
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).
- 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.
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 :
Update the affected packages.
Risk factor :
Critical / CVSS Base Score : 10.0
Family: Scientific Linux Local Security Checks
Nessus Plugin ID: 60831 ()
CVE ID: CVE-2010-2248CVE-2010-2521
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