Home / mailings [USN-2109-1] Linux kernel vulnerabilities
Posted on 19 February 2014
Ubuntu Security==========================
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Ubuntu Security Notice USN-2109-1
February 18, 2014
linux vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux: Linux kernel
Details:
Vasily Kulikov reported a flaw in the Linux kernel's implementation of
ptrace. An unprivileged local user could exploit this flaw to obtain
sensitive information from kernel memory. (CVE-2013-2929)
Stephan Mueller reported an error in the Linux kernel's ansi cprng random=
number generator. This flaw makes it easier for a local attacker to break=
cryptographic protections. (CVE-2013-4345)
Andrew Honig reported a flaw in the Linux Kernel's kvm_vm_ioctl_create_vc=
pu
function of the Kernel Virtual Machine (KVM) subsystem. A local user coul=
d
exploit this flaw to gain privileges on the host machine. (CVE-2013-4587)=
Andrew Honig reported a flaw in the apic_get_tmcct function of the Kernel=
Virtual Machine (KVM) subsystem if the Linux kernel. A guest OS user coul=
d
exploit this flaw to cause a denial of service or host OS system crash.
(CVE-2013-6367)
Nico Golde and Fabian Yamaguchi reported a flaw in the driver for Adaptec=
AACRAID scsi raid devices in the Linux kernel. A local user could use thi=
s
flaw to cause a denial of service or possibly other unspecified impact.
(CVE-2013-6380)
Nico Golde and Fabian Yamaguchi reported buffer underflow errors in the
implementation of the XFS filesystem in the Linux kernel. A local user wi=
th
CAP_SYS_ADMIN could exploit these flaw to cause a denial of service (memo=
ry
corruption) or possibly other unspecified issues. (CVE-2013-6382)
mpd reported an information leak in the recvfrom, recvmmsg, and recvmsg
system calls in the Linux kernel. An unprivileged local user could exploi=
t
this flaw to obtain sensitive information from kernel stack memory.
(CVE-2013-7263)
mpb reported an information leak in the Layer Two Tunneling Protocol (l2t=
p)
of the Linux kernel. A local user could exploit this flaw to obtain
sensitive information from kernel stack memory. (CVE-2013-7264)
mpb reported an information leak in the Phone Network protocol (phonet) i=
n
the Linux kernel. A local user could exploit this flaw to obtain sensitiv=
e
information from kernel stack memory. (CVE-2013-7265)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg=
systemcalls when used with ISDN sockets in the Linux kernel. A local user=
could exploit this leak to obtain potentially sensitive information from
kernel memory. (CVE-2013-7266)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg=
systemcalls when used with apple talk sockets in the Linux kernel. A loca=
l
user could exploit this leak to obtain potentially sensitive information
from kernel memory. (CVE-2013-7267)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg=
systemcalls when used with ipx protocol sockets in the Linux kernel. A
local user could exploit this leak to obtain potentially sensitive
information from kernel memory. (CVE-2013-7268)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg=
systemcalls when used with the netrom address family in the Linux kernel.=
A
local user could exploit this leak to obtain potentially sensitive
information from kernel memory. (CVE-2013-7269)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg=
systemcalls when used with packet address family sockets in the Linux
kernel. A local user could exploit this leak to obtain potentially
sensitive information from kernel memory. (CVE-2013-7270)
An information leak was discovered in the recvfrom, recvmmsg, and recvmsg=
systemcalls when used with x25 protocol sockets in the Linux kernel. A
local user could exploit this leak to obtain potentially sensitive
information from kernel memory. (CVE-2013-7271)
mpb reported an information leak in the Low-Rate Wireless Personal Area
Networks support (IEEE 802.15.4) in the Linux kernel. A local user could
exploit this flaw to obtain sensitive information from kernel stack memor=
y.
(CVE-2013-7281)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.2.0-59-generic 3.2.0-59.90
linux-image-3.2.0-59-generic-pae 3.2.0-59.90
linux-image-3.2.0-59-highbank 3.2.0-59.90
linux-image-3.2.0-59-omap 3.2.0-59.90
linux-image-3.2.0-59-powerpc-smp 3.2.0-59.90
linux-image-3.2.0-59-powerpc64-smp 3.2.0-59.90
linux-image-3.2.0-59-virtual 3.2.0-59.90
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic=
,
linux-server, linux-powerpc), a standard system upgrade will automaticall=
y
perform this as well.
References:
http://www.ubuntu.com/usn/usn-2109-1
CVE-2013-2929, CVE-2013-4345, CVE-2013-4587, CVE-2013-6367,
CVE-2013-6380, CVE-2013-6382, CVE-2013-7263, CVE-2013-7264,
CVE-2013-7265, CVE-2013-7266, CVE-2013-7267, CVE-2013-7268,
CVE-2013-7269, CVE-2013-7270, CVE-2013-7271, CVE-2013-7281
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-59.90
