Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3099-2)

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 :

USN-3099-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

Vladimir Benes discovered an unbounded recursion in the VLAN and TEB
Generic Receive Offload (GRO) processing implementations in the Linux
kernel, A remote attacker could use this to cause a stack corruption,
leading to a denial of service (system crash). (CVE-2016-7039)

Marco Grassi discovered a use-after-free condition could occur in the
TCP retransmit queue handling code in the Linux kernel. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2016-6828)

Pengfei Wang discovered a race condition in the Adaptec AAC RAID
controller driver in the Linux kernel when handling ioctl()s. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2016-6480).

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-4.4-generic,
linux-image-4.4-generic-lpae and / or linux-image-4.4-lowlatency
packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 5.5
(CVSS2#E:U/RL:OF/RC:UR)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 93957 ()

Bugtraq ID:

CVE ID: CVE-2016-6480
CVE-2016-6828
CVE-2016-7039

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