Ubuntu 15.10 : linux vulnerabilities (USN-3003-1)

Ubuntu Security Notice (C) 2016 Canonical, Inc. / NASL script (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

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)

Jann Horn discovered that eCryptfs improperly attempted to use the
mmap() handler of a lower filesystem that did not implement one,
causing a recursive page fault to occur. A local unprivileged attacker
could use to cause a denial of service (system crash) or possibly
execute arbitrary code with administrative privileges. (CVE-2016-1583)

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)

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)

Vitaly Kuznetsov discovered that the Linux kernel did not properly
suppress hugetlbfs support in X86 paravirtualized guests. An attacker
in the guest OS could cause a denial of service (guest system crash).
(CVE-2016-3961)

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)

Jann Horn discovered that the InfiniBand interfaces within the Linux
kernel could be coerced into overwriting kernel memory. A local
unprivileged attacker could use this to possibly gain administrative
privileges on systems where InifiniBand related kernel modules are
loaded. (CVE-2016-4565)

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).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected linux-image-4.2-generic,
linux-image-4.2-generic-lpae and / or linux-image-4.2-lowlatency
packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

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