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

This script is Copyright (C) 2012-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

Security issues :

- Using PCI passthrough without interrupt remapping
support allowed KVM guests to generate MSI interrupts
and thus potentially inject traps. A privileged guest
user could use this flaw to crash the host or possibly
escalate their privileges on the host. The fix for this
issue can prevent PCI passthrough working and guests
starting. (CVE-2011-1898, Important)

- Flaw in the client-side NLM implementation could allow a
local, unprivileged user to cause a denial of service.
(CVE-2011-2491, Important)

- Integer underflow in the Bluetooth implementation could
allow a remote attacker to cause a denial of service or
escalate their privileges by sending a specially crafted
request to a target system via Bluetooth.
(CVE-2011-2497, Important)

- Buffer overflows in the netlink-based wireless
configuration interface implementation could allow a
local user, who has the CAP_NET_ADMIN capability, to
cause a denial of service or escalate their privileges
on systems that have an active wireless interface.
(CVE-2011-2517, Important)

- Flaw in the way the maximum file offset was handled for
ext4 file systems could allow a local, unprivileged user
to cause a denial of service. (CVE-2011-2695, Important)

- Flaw allowed napi_reuse_skb() to be called on VLAN
packets. An attacker on the local network could use this
flaw to send crafted packets to a target, possibly
causing a denial of service. (CVE-2011-1576, Moderate)

- Integer signedness error in next_pidmap() could allow a
local, unprivileged user to cause a denial of service.
(CVE-2011-1593, Moderate)

- Race condition in the memory merging support (KSM) could
allow a local, unprivileged user to cause a denial of
service. KSM is off by default, but on systems running
VDSM, or on KVM hosts, it is likely turned on by the
ksm/ksmtuned services. (CVE-2011-2183, Moderate)

- Flaw in inet_diag_bc_audit() could allow a local,
unprivileged user to cause a denial of service.
(CVE-2011-2213, Moderate)

- Flaw in the way space was allocated in the Global File
System 2 (GFS2) implementation. If the file system was
almost full, and a local, unprivileged user made an
fallocate() request, it could result in a denial of
service. Setting quotas to prevent users from using all
available disk space would prevent exploitation of this
flaw. (CVE-2011-2689, Moderate)

- Local, unprivileged users could send signals via the
sigqueueinfo system call, with si_code set to SI_TKILL
and with spoofed process and user IDs, to other
processes. This flaw does not allow existing permission
checks to be bypassed
signals can only be sent if your
privileges allow you to already do so. (CVE-2011-1182,
Low)

- Heap overflow in the EFI GUID Partition Table (GPT)
implementation could allow a local attacker to cause a
denial of service by mounting a disk containing crafted
partition tables. (CVE-2011-1776, Low)

- Structure padding in two structures in the Bluetooth
implementation was not initialized properly before being
copied to user-space, possibly allowing local,
unprivileged users to leak kernel stack memory to
user-space. (CVE-2011-2492, Low)

- /proc/[PID]/io is world-readable by default. Previously,
these files could be read without any further
restrictions. A local, unprivileged user could read
these files, belonging to other, possibly privileged
processes to gather confidential information, such as
the length of a password used in a process.
(CVE-2011-2495, Low)

See also :

http://www.nessus.org/u?fe119787

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 8.3
(CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C)