USN-2931-1: Linux kernel (Utopic HWE) vulnerabilities
14 March 2016
Several security issues were fixed in the kernel.
Releases
Packages
- linux-lts-utopic - Linux hardware enablement kernel from Utopic for Trusty
Details
Ben Hawkes discovered that the Linux netfilter implementation did not
correctly perform validation when handling IPT_SO_SET_REPLACE events. A
local unprivileged attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code with administrative
privileges. (CVE-2016-3134)
It was discovered that the Linux kernel did not properly enforce rlimits
for file descriptors sent over UNIX domain sockets. A local attacker could
use this to cause a denial of service. (CVE-2013-4312)
It was discovered that a race condition existed when handling heartbeat-
timeout events in the SCTP implementation of the Linux kernel. A remote
attacker could use this to cause a denial of service. (CVE-2015-8767)
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)
Andrey Konovalov discovered that the ALSA USB MIDI driver incorrectly
performed a double-free. A local attacker with physical access could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code with administrative privileges. (CVE-2016-2384)
Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA)
framework did not verify that a FIFO was attached to a client before
attempting to clear it. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-2543)
Dmitry Vyukov discovered that a race condition existed in the Advanced
Linux Sound Architecture (ALSA) framework between timer setup and closing
of the client, resulting in a use-after-free. A local attacker could use
this to cause a denial of service. (CVE-2016-2544)
Dmitry Vyukov discovered a race condition in the timer handling
implementation of the Advanced Linux Sound Architecture (ALSA) framework,
resulting in a use-after-free. A local attacker could use this to cause a
denial of service (system crash). (CVE-2016-2545)
Dmitry Vyukov discovered race conditions in the Advanced Linux Sound
Architecture (ALSA) framework's timer ioctls leading to a use-after-free. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2016-2546)
Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA)
framework's handling of high resolution timers did not properly manage its
data structures. A local attacker could use this to cause a denial of
service (system hang or crash) or possibly execute arbitrary code.
(CVE-2016-2547, CVE-2016-2548)
Dmitry Vyukov discovered that the Advanced Linux Sound Architecture (ALSA)
framework's handling of high resolution timers could lead to a deadlock
condition. A local attacker could use this to cause a denial of service
(system hang). (CVE-2016-2549)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 14.04
-
linux-image-3.16.0-67-generic
-
3.16.0-67.87~14.04.1
-
linux-image-3.16.0-67-generic-lpae
-
3.16.0-67.87~14.04.1
-
linux-image-3.16.0-67-lowlatency
-
3.16.0-67.87~14.04.1
-
linux-image-3.16.0-67-powerpc-e500mc
-
3.16.0-67.87~14.04.1
-
linux-image-3.16.0-67-powerpc-smp
-
3.16.0-67.87~14.04.1
-
linux-image-3.16.0-67-powerpc64-emb
-
3.16.0-67.87~14.04.1
-
linux-image-3.16.0-67-powerpc64-smp
-
3.16.0-67.87~14.04.1
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.
Related notices
- USN-2929-1: linux-image-3.13.0-83-powerpc-e500mc, linux-image-3.13.0-83-generic-lpae, linux-image-3.13.0-83-powerpc64-emb, linux-image-3.13.0-83-powerpc-e500, linux-image-3.13.0-83-powerpc64-smp, linux, linux-image-extra-3.13.0-83-generic, linux-image-3.13.0-83-lowlatency, linux-image-3.13.0-83-powerpc-smp, linux-image-3.13.0-83-generic
- USN-2929-2: linux-image-3.13.0-83-generic-lpae, linux-lts-trusty, linux-image-3.13.0-83-generic
- USN-2967-2: linux-ti-omap4, linux-image-3.2.0-1480-omap4
- USN-2967-1: linux-image-3.2.0-102-powerpc64-smp, linux-image-3.2.0-102-powerpc-smp, linux-image-3.2.0-102-generic, linux, linux-image-3.2.0-102-generic-pae, linux-image-3.2.0-102-virtual, linux-image-3.2.0-102-omap, linux-image-3.2.0-102-highbank
- USN-2908-2: linux-image-extra-4.2.0-30-generic, linux-image-4.2.0-30-generic-lpae, linux-image-4.2.0-30-generic, linux-image-4.2.0-30-powerpc64-smp, linux-image-4.2.0-30-powerpc-e500mc, linux-image-4.2.0-30-powerpc-smp, linux-image-4.2.0-30-lowlatency, linux-lts-wily, linux-image-4.2.0-30-powerpc64-emb
- USN-2932-1: linux-image-3.19.0-56-generic, linux-image-3.19.0-56-powerpc-smp, linux-image-3.19.0-56-powerpc64-smp, linux-lts-vivid, linux-image-3.19.0-56-powerpc64-emb, linux-image-3.19.0-56-lowlatency, linux-image-3.19.0-56-generic-lpae, linux-image-3.19.0-56-powerpc-e500mc, linux-image-extra-3.19.0-56-generic
- USN-2908-3: linux-raspi2, linux-image-4.2.0-1025-raspi2
- USN-2908-1: linux-image-4.2.0-30-generic-lpae, linux-image-4.2.0-30-generic, linux-image-4.2.0-30-powerpc64-smp, linux-image-4.2.0-30-powerpc-e500mc, linux-image-4.2.0-30-powerpc-smp, linux-image-4.2.0-30-lowlatency, linux, linux-image-4.2.0-30-powerpc64-emb
- USN-2930-2: linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-generic-lpae, linux-image-4.2.0-34-powerpc-e500mc, linux-image-4.2.0-34-powerpc64-smp, linux-image-extra-4.2.0-34-generic, linux-lts-wily, linux-image-4.2.0-34-generic, linux-image-4.2.0-34-powerpc64-emb
- USN-3083-1: linux-image-3.13.0-96-powerpc-smp, linux-image-3.13.0-96-powerpc-e500mc, linux-image-3.13.0-96-powerpc-e500, linux-image-3.13.0-96-powerpc64-smp, linux-image-extra-3.13.0-96-generic, linux, linux-image-3.13.0-96-lowlatency, linux-image-3.13.0-96-generic-lpae, linux-image-3.13.0-96-generic, linux-image-3.13.0-96-powerpc64-emb
- USN-3083-2: linux-lts-trusty, linux-image-3.13.0-96-generic-lpae, linux-image-3.13.0-96-generic
- USN-2930-3: linux-image-4.2.0-1027-raspi2, linux-raspi2
- USN-2930-1: linux-image-4.2.0-34-lowlatency, linux-image-4.2.0-34-powerpc-smp, linux-image-4.2.0-34-generic-lpae, linux-image-4.2.0-34-powerpc-e500mc, linux, linux-image-4.2.0-34-powerpc64-smp, linux-image-4.2.0-34-generic, linux-image-4.2.0-34-powerpc64-emb
- USN-2989-1: linux-image-3.13.0-87-generic-lpae, linux-image-3.13.0-87-powerpc-smp, linux-image-3.13.0-87-powerpc-e500, linux-image-3.13.0-87-powerpc64-smp, linux-image-3.13.0-87-generic, linux-image-3.13.0-87-lowlatency, linux-image-extra-3.13.0-87-generic, linux, linux-image-3.13.0-87-powerpc-e500mc, linux-image-3.13.0-87-powerpc64-emb
- USN-2998-1: linux-image-3.13.0-88-generic-lpae, linux-lts-trusty, linux-image-3.13.0-88-generic
- USN-2928-1: linux-image-3.2.0-101-virtual, linux-image-3.2.0-101-generic-pae, linux-image-3.2.0-101-powerpc64-smp, linux-image-3.2.0-101-generic, linux-image-3.2.0-101-powerpc-smp, linux, linux-image-3.2.0-101-highbank, linux-image-3.2.0-101-omap
- USN-2928-2: linux-ti-omap4, linux-image-3.2.0-1479-omap4
- USN-3050-1: linux-image-3.2.0-1485-omap4, linux-ti-omap4
- USN-3049-1: linux-image-3.2.0-107-powerpc64-smp, linux-image-3.2.0-107-omap, linux-image-3.2.0-107-generic, linux-image-3.2.0-107-virtual, linux-image-3.2.0-107-powerpc-smp, linux, linux-image-3.2.0-107-generic-pae, linux-image-3.2.0-107-highbank