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[USN-2117-1] Linux kernel vulnerabilities

Posted on 19 February 2014
Ubuntu Security

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Ubuntu Security Notice USN-2117-1
February 18, 2014

linux vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.10

Summary:

Several security issues were fixed in the kernel.

Software Description:
- linux: Linux kernel

Details:

Saran Neti reported a flaw in the ipv6 UDP Fragmentation Offload (UFI) in=

the Linux kernel. A remote attacker could exploit this flaw to cause a
denial of service (panic). (CVE-2013-4563)

Mathy Vanhoef discovered an error in the the way the ath9k driver was
handling the BSSID masking. A remote attacker could exploit this error to=

discover the original MAC address after a spoofing atack. (CVE-2013-4579)=


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)

Andrew Honig reported an error in the Linux Kernel's Kernel Virtual Machi=
ne
(KVM) VAPIC synchronization operation. A local user could exploit this fl=
aw
to gain privileges or cause a denial of service (system crash).
(CVE-2013-6368)

Lars Bull discovered a flaw in the recalculate_apic_map function of the
Kernel Virtual Machine (KVM) subsystem in the Linux kernel. A guest OS us=
er
could exploit this flaw to cause a denial of service (host OS crash).
(CVE-2013-6376)

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)

A flaw was discovered in the ipv4 ping_recvmsg function of the Linux
kernel. A local user could exploit this flaw to cause a denial of service=

(NULL pointer dereference and system crash). (CVE-2013-6432)

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)

halfdog reported an error in the AMD K7 and K8 platform support in the
Linux kernel. An unprivileged local user could exploit this flaw on AMD
based systems to cause a denial of service (task kill) or possibly gain
privileges via a crafted application. (CVE-2014-1438)

An information leak was discovered in the Linux kernel's hamradio YAM
driver for AX.25 packet radio. A local user with the CAP_NET_ADMIN
capability could exploit this flaw to obtain sensitive information from
kernel memory. (CVE-2014-1446)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 13.10:
linux-image-3.11.0-17-generic 3.11.0-17.31
linux-image-3.11.0-17-generic-lpae 3.11.0-17.31

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-2117-1
CVE-2013-4563, CVE-2013-4579, CVE-2013-4587, CVE-2013-6367,
CVE-2013-6368, CVE-2013-6376, CVE-2013-6382, CVE-2013-6432,
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, CVE-2014-1438, CVE-2014-1446

Package Information:
https://launchpad.net/ubuntu/+source/linux/3.11.0-17.31

 

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