==========================================================================
Ubuntu Security Notice USN-2989-1
June 01, 2016
linux vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 14.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
– linux: Linux kernel
Details:
Justin Yackoski discovered that the Atheros L2 Ethernet Driver in the Linux
kernel incorrectly enables scatter/gather I/O. A remote attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-2117)
Jason A. Donenfeld discovered multiple out-of-bounds reads in the OZMO USB
over wifi device drivers in the Linux kernel. A remote attacker could use
this to cause a denial of service (system crash) or obtain potentially
sensitive information from kernel memory. (CVE-2015-4004)
Andy Lutomirski discovered a race condition in the Linux kernel’s
translation lookaside buffer (TLB) handling of flush events. A local
attacker could use this to cause a denial of service or possibly leak
sensitive information. (CVE-2016-2069)
Ralf Spenneberg discovered that the Linux kernel’s GTCO digitizer USB
device driver did not properly validate endpoint descriptors. An attacker
with physical access could use this to cause a denial of service (system
crash). (CVE-2016-2187)
Hector Marco and Ismael Ripoll discovered that the Linux kernel would
improperly disable Address Space Layout Randomization (ASLR) for x86
processes running in 32 bit mode if stack-consumption resource limits were
disabled. A local attacker could use this to make it easier to exploit an
existing vulnerability in a setuid/setgid program. (CVE-2016-3672)
Andrey Konovalov discovered that the CDC Network Control Model USB driver
in the Linux kernel did not cancel work events queued if a later error
occurred, resulting in a use-after-free. An attacker with physical access
could use this to cause a denial of service (system crash). (CVE-2016-3951)
It was discovered that an out-of-bounds write could occur when handling
incoming packets in the USB/IP implementation in the Linux kernel. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2016-3955)
Kangjie Lu discovered an information leak in the ANSI/IEEE 802.2 LLC type 2
Support implementations in the Linux kernel. A local attacker could use
this to obtain potentially sensitive information from kernel memory.
(CVE-2016-4485)
Kangjie Lu discovered an information leak in the routing netlink socket
interface (rtnetlink) implementation in the Linux kernel. A local attacker
could use this to obtain potentially sensitive information from kernel
memory. (CVE-2016-4486)
It was discovered that in some situations the Linux kernel did not handle
propagated mounts correctly. A local unprivileged attacker could use this
to cause a denial of service (system crash). (CVE-2016-4581)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 14.04 LTS:
linux-image-3.13.0-87-generic 3.13.0-87.133
linux-image-3.13.0-87-generic-lpae 3.13.0-87.133
linux-image-3.13.0-87-lowlatency 3.13.0-87.133
linux-image-3.13.0-87-powerpc-e500 3.13.0-87.133
linux-image-3.13.0-87-powerpc-e500mc 3.13.0-87.133
linux-image-3.13.0-87-powerpc-smp 3.13.0-87.133
linux-image-3.13.0-87-powerpc64-emb 3.13.0-87.133
linux-image-3.13.0-87-powerpc64-smp 3.13.0-87.133
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.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References:
http://www.ubuntu.com/usn/usn-2989-1
CVE-2015-4004, CVE-2016-2069, CVE-2016-2117, CVE-2016-2187,
CVE-2016-3672, CVE-2016-3951, CVE-2016-3955, CVE-2016-4485,
CVE-2016-4486, CVE-2016-4581
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.13.0-87.133
—–BEGIN PGP SIGNATURE—–
Version: GnuPG v1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=s4XF
—–END PGP SIGNATURE—–
—
