Oracle Linux 5 : kernel (ELSA-2013-1034)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

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

Description :

From Red Hat Security Advisory 2013:1034 :

Updated kernel packages that fix multiple security issues and various
bugs are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having low
security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues :

* Information leaks in the Linux kernel could allow a local,
unprivileged user to leak kernel memory to user-space. (CVE-2012-6544,
CVE-2012-6545, CVE-2013-3222, CVE-2013-3224, CVE-2013-3231,
CVE-2013-3235, Low)

* An information leak was found in the Linux kernel's POSIX signals
implementation. A local, unprivileged user could use this flaw to
bypass the Address Space Layout Randomization (ASLR) security feature.
(CVE-2013-0914, Low)

* A heap-based buffer overflow in the way the tg3 Ethernet driver
parsed the vital product data (VPD) of devices could allow an attacker
with physical access to a system to cause a denial of service or,
potentially, escalate their privileges. (CVE-2013-1929, Low)

This update also fixes the following bugs :

* Previously on system boot, devices with associated Reserved Memory
Region Reporting (RMRR) information had lost their RMRR information
after they were removed from the static identity (SI) domain.
Consequently, a system unexpectedly terminated in an endless loop due
to unexpected NMIs triggered by DMA errors. This problem was observed
on HP ProLiant Generation 7 (G7) and 8 (Gen8) systems. This update
prevents non-USB devices that have RMRR information associated with
them from being placed into the SI domain during system boot. HP
ProLiant G7 and Gen8 systems that contain devices with the RMRR
information now boot as expected. (BZ#957606)

* Previously, the kernel's futex wait code used timeouts that had
granularity in milliseconds. Also, when passing these timeouts to
system calls, the kernel converted the timeouts to 'jiffies'.
Consequently, programs could time out inaccurately which could lead to
significant latency problems in certain environments. This update
modifies the futex wait code to use a high-resolution timer (hrtimer)
so the timeout granularity is now in microseconds. Timeouts are no
longer converted to 'jiffies' when passed to system calls. Timeouts
passed to programs are now accurate and the programs time out as
expected. (BZ#958021)

* A recent change modified the size of the task_struct structure in
the floating point unit (fpu) counter. However, on Intel Itanium
systems, this change caused the kernel Application Binary Interface
(kABI) to stop working properly when a previously compiled module was
loaded, resulting in a kernel panic. With this update the change
causing this bug has been reverted so the bug can no longer occur.
(BZ#966878)

* The cxgb4 driver previously did not clear data structures used for
firmware requests. Consequently, when initializing some Chelsio's
Terminator 4 (T4) adapters, a probe request could fail because the
request was incompatible with the adapter's firmware. This update
modifies the cxgb4 driver to properly initialize firmware request
structures before sending a request to the firmware and the problem no
longer occurs. (BZ#971872)

Users should upgrade to these updated packages, which contain
backported patches to correct these issues. The system must be
rebooted for this update to take effect.

See also :

https://oss.oracle.com/pipermail/el-errata/2013-July/003571.html

Solution :

Update the affected kernel packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N)
CVSS Temporal Score : 4.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false