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

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

Synopsis :

The remote Scientific Linux host is missing one or more security

Description :

CVE-2009-1439 kernel: cifs: memory overwrite when saving
nativeFileSystem field during mount

CVE-2009-1633 kernel: cifs: fix potential buffer overruns when
converting unicode strings sent by server

CVE-2009-1389 kernel: r8169: fix crash when large packets are received

These updated packages fix the following security issues :

- Michael Tokarev reported a flaw in the Realtek r8169
Ethernet driver in the Linux kernel. This driver allowed
interfaces using this driver to receive frames larger
than what could be handled. This could lead to a remote
denial of service or code execution. (CVE-2009-1389,

- a buffer overflow flaw was found in the CIFSTCon()
function of the Linux kernel Common Internet File System
(CIFS) implementation. When mounting a CIFS share, a
malicious server could send an overly-long string to the
client, possibly leading to a denial of service or
privilege escalation on the client mounting the CIFS
share. (CVE-2009-1439, Important)

- several flaws were found in the way the Linux kernel
CIFS implementation handles Unicode strings. CIFS
clients convert Unicode strings sent by a server to
their local character sets, and then write those strings
into memory. If a malicious server sent a long enough
string, it could write past the end of the target memory
region and corrupt other memory areas, possibly leading
to a denial of service or privilege escalation on the
client mounting the CIFS share. (CVE-2009-1633,

These updated packages also fix the following bugs :

- when using network bonding in the 'balance-tlb' or
'balance-alb' mode, the primary setting for the primary
slave device was lost when said device was brought down
(ifdown). Bringing the slave interface back up (ifup)
did not restore the primary setting (the device was not
made the active slave). (BZ#507563)

- a bug in timer_interrupt() may have caused the system
time to move up to two days or more into the future, or
to be delayed for several minutes.This bug only affected
Intel 64 and AMD64 systems that have the High Precision
Event Timer (HPET) enabled in the BIOS, and could have
caused problems for applications that require timing to
be accurate. (BZ#508835)

- a race condition was resolved in the Linux kernel block
layer between show_partition() and rescan_partitions().
This could have caused a NULL pointer dereference in
show_partition(), leading to a system crash (kernel
panic). This issue was most likely to occur on systems
running monitoring software that regularly scanned hard
disk partitions, or from repeatedly running commands
that probe for partition information. (BZ#512310)

- previously, the Stratus memory tracker missed certain
modified pages. With this update, information about the
type of page (small page or huge page) is passed to the
Stratus memory tracker, which resolves this issue. The
fix for this issue does not affect systems that do not
use memory tracking. (BZ#513182)

- a bug may have caused a system crash when using the
cciss driver, due toan uninitialized kernel structure. A
reported case of this issue occurred after issuing
consecutive SCSI TUR commands (sg_turs sends SCSI
test-unit-ready commands in a loop). (BZ#513189)

- a bug in the SCSI implementation caused 'Aborted Command
- internal target failure' errors to be sent to
Device-Mapper Multipath, without retries, resulting in
Device-Mapper Multipath marking the path as failed and
making a path group switch. With this update, all errors
that return a sense key in the SCSI mid layer (including
'Aborted Command - internal target failure') are
retried. (BZ#514007)

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

See also :

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.8

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60641 ()

Bugtraq ID:

CVE ID: CVE-2009-1389

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