Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2844-1)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

Jan Beulich discovered that the KVM svm hypervisor implementation in
the Linux kernel did not properly catch Debug exceptions on AMD
processors. An attacker in a guest virtual machine could use this to
cause a denial of service (system crash) in the host OS.
(CVE-2015-8104)

Guoyong Gang discovered that the ppp implementation in the Linux
kernel did not ensure that certain slot numbers are valid. A local
attacker with the privilege to call ioctl() on /dev/ppp could cause a
denial of service (system crash). (CVE-2015-7799)

It was discovered that the driver for Digi Neo and ClassicBoard
devices did not properly initialize data structures. A local attacker
could use this to obtain sensitive information from the kernel.
(CVE-2015-7885).

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-3.16-generic,
linux-image-3.16-generic-lpae and / or linux-image-3.16-lowlatency
packages.

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 4.0
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 87471 ()

Bugtraq ID:

CVE ID: CVE-2015-7799
CVE-2015-7885
CVE-2015-8104

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