Ubuntu 14.10 : linux vulnerabilities (USN-2468-1)

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 :

A NULL pointer dereference flaw was discovered in the the Linux
kernel's SCTP implementation when ASCONF is used. A remote attacker
could exploit this flaw to cause a denial of service (system crash)
via a malformed INIT chunk. (CVE-2014-7841)

A race condition with MMIO and PIO transactions in the KVM (Kernel
Virtual Machine) subsystem of the Linux kernel was discovered. A guest
OS user could exploit this flaw to cause a denial of service (guest OS
crash) via a specially crafted application. (CVE-2014-7842)

Milos Prchlik reported a flaw in how the ARM64 platform handles a
single byte overflow in __clear_user. A local user could exploit this
flaw to cause a denial of service (system crash) by reading one byte
beyond a /dev/zero page boundary. (CVE-2014-7843)

A stack buffer overflow was discovered in the ioctl command handling
for the Technotrend/Hauppauge USB DEC devices driver. A local user
could exploit this flaw to cause a denial of service (system crash) or
possibly gain privileges. (CVE-2014-8884).

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 : 6.1
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 80515 ()

Bugtraq ID: 71078
71081
71082
71097

CVE ID: CVE-2014-7841
CVE-2014-7842
CVE-2014-7843
CVE-2014-8884

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