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
updates.

Description :

These updated packages fix the following security issues :

- the absence of a protection mechanism when attempting to
access a critical section of code has been found in the
Linux kernel open file descriptors control mechanism,
fcntl. This could allow a local unprivileged user to
simultaneously execute code, which would otherwise be
protected against parallel execution. As well, a race
condition when handling locks in the Linux kernel fcntl
functionality, may have allowed a process belonging to a
local unprivileged user to gain re-ordered access to the
descriptor table. (CVE-2008-1669, Important)

- on AMD64 architectures, the possibility of a kernel
crash was discovered by testing the Linux kernel
process-trace ability. This could allow a local
unprivileged user to cause a denial of service (kernel
crash). (CVE-2008-1615, Important)

- the absence of a protection mechanism when attempting to
access a critical section of code, as well as a race
condition, have been found in the Linux kernel file
system event notifier, dnotify. This could allow a local
unprivileged user to get inconsistent data, or to send
arbitrary signals to arbitrary system processes.
(CVE-2008-1375, Important)

- when accessing kernel memory locations, certain Linux
kernel drivers registering a fault handler did not
perform required range checks. A local unprivileged user
could use this flaw to gain read or write access to
arbitrary kernel memory, or possibly cause a kernel
crash. (CVE-2008-0007, Important)

- the possibility of a kernel crash was found in the Linux
kernel IPsec protocol implementation, due to improper
handling of fragmented ESP packets. When an attacker
controlling an intermediate router fragmented these
packets into very small pieces, it would cause a kernel
crash on the receiving node during packet reassembly.
(CVE-2007-6282, Important)

- a flaw in the MOXA serial driver could allow a local
unprivileged user to perform privileged operations, such
as replacing firmware. (CVE-2005-0504, Important)

As well, these updated packages fix the following bugs :

- multiple buffer overflows in the neofb driver have been
resolved. It was not possible for an unprivileged user
to exploit these issues, and as such, they have not been
handled as security issues.

- a kernel panic, due to inconsistent detection of AGP
aperture size, has been resolved.

- a race condition in UNIX domain sockets may have caused
'recv()' to return zero. In clustered configurations,
this may have caused unexpected failovers.

- to prevent link storms, network link carrier events were
delayed by up to one second, causing unnecessary packet
loss. Now, link carrier events are scheduled
immediately.

- a client-side race on blocking locks caused large time
delays on NFS file systems.

- in certain situations, the libATA sata_nv driver may
have sent commands with duplicate tags, which were
rejected by SATA devices. This may have caused infinite
reboots.

- running the 'service network restart' command may have
caused networking to fail.

- a bug in NFS caused cached information about directories
to be stored for too long, causing wrong attributes to
be read.

- on systems with a large highmem/lowmem ratio, NFS write
performance may have been very slow when using small
files.

- a bug, which caused network hangs when the system clock
was wrapped around zero, has been resolved.

See also :

http://www.nessus.org/u?371ebec4

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60394 ()

Bugtraq ID:

CVE ID: CVE-2005-0504
CVE-2007-6282
CVE-2008-0007
CVE-2008-1375
CVE-2008-1615
CVE-2008-1669