Scientific Linux Security Update : kernel on SL6.x i386/x86_64

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


Synopsis :

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

Description :

* A flaw was found in the way the Linux kernel's futex subsystem
handled the requeuing of certain Priority Inheritance (PI) futexes. A
local, unprivileged user could use this flaw to escalate their
privileges on the system. (CVE-2014-3153, Important)

* A flaw was found in the way the Linux kernel's floppy driver handled
user space provided data in certain error code paths while processing
FDRAWCMD IOCTL commands. A local user with write access to /dev/fdX
could use this flaw to free (using the kfree() function) arbitrary
kernel memory. (CVE-2014-1737, Important)

* It was found that the Linux kernel's floppy driver leaked internal
kernel memory addresses to user space during the processing of the
FDRAWCMD IOCTL command. A local user with write access to /dev/fdX
could use this flaw to obtain information about the kernel heap
arrangement. (CVE-2014-1738, Low)

Note: A local user with write access to /dev/fdX could use these two
flaws (CVE-2014-1737 in combination with CVE-2014-1738) to escalate
their privileges on the system.

* It was discovered that the proc_ns_follow_link() function did not
properly return the LAST_BIND value in the last pathname component as
is expected for procfs symbolic links, which could lead to excessive
freeing of memory and consequent slab corruption. A local,
unprivileged user could use this flaw to crash the system.
(CVE-2014-0203, Moderate)

* A flaw was found in the way the Linux kernel handled exceptions when
user-space applications attempted to use the linkage stack. On IBM
S/390 systems, a local, unprivileged user could use this flaw to crash
the system. (CVE-2014-2039, Moderate)

* An invalid pointer dereference flaw was found in the Marvell 8xxx
Libertas WLAN (libertas) driver in the Linux kernel. A local user able
to write to a file that is provided by the libertas driver and located
on the debug file system (debugfs) could use this flaw to crash the
system. Note: The debugfs file system must be mounted locally to
exploit this issue. It is not mounted by default. (CVE-2013-6378, Low)

* A denial of service flaw was discovered in the way the Linux
kernel's SELinux implementation handled files with an empty SELinux
security context. A local user who has the CAP_MAC_ADMIN capability
could use this flaw to crash the system. (CVE-2014-1874, Low)

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

See also :

http://www.nessus.org/u?0ec7bef9

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: 76157 ()

Bugtraq ID:

CVE ID: CVE-2013-6378
CVE-2014-0203
CVE-2014-1737
CVE-2014-1738
CVE-2014-1874
CVE-2014-2039
CVE-2014-3153