Category Archives: Ubuntu

Ubuntu Security Notices

Ubuntu

USN-3051-1: Linux kernel (Trusty HWE) vulnerabilities

Ubuntu Security Notice USN-3051-1

10th August, 2016

linux-lts-trusty vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-lts-trusty
    – Linux hardware enablement kernel from Trusty for Precise

Details

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 12.04 LTS:
linux-image-3.13.0-93-generic-lpae

3.13.0-93.140~precise1
linux-image-3.13.0-93-generic

3.13.0-93.140~precise1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-4470,

CVE-2016-5243

Ubuntu

USN-3050-1: Linux kernel (OMAP4) vulnerabilities

Ubuntu Security Notice USN-3050-1

10th August, 2016

linux-ti-omap4 vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 12.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-ti-omap4
    – Linux kernel for OMAP4

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)

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)

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 12.04 LTS:
linux-image-3.2.0-1485-omap4

3.2.0-1485.112

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-3134,

CVE-2016-3961,

CVE-2016-4470,

CVE-2016-5243

Ubuntu

USN-3053-1: Linux kernel (Vivid HWE) vulnerabilities

Ubuntu Security Notice USN-3053-1

10th August, 2016

linux-lts-vivid vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-lts-vivid
    – Linux hardware enablement kernel from Vivid for Trusty

Details

A missing permission check when settings ACLs was discovered in nfsd. A
local user could exploit this flaw to gain access to any file by setting an
ACL. (CVE-2016-1237)

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Sasha Levin discovered that a use-after-free existed in the percpu
allocator in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-4794)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 14.04 LTS:
linux-image-3.19.0-66-powerpc64-smp

3.19.0-66.74~14.04.1
linux-image-3.19.0-66-generic-lpae

3.19.0-66.74~14.04.1
linux-image-3.19.0-66-powerpc-e500mc

3.19.0-66.74~14.04.1
linux-image-3.19.0-66-lowlatency

3.19.0-66.74~14.04.1
linux-image-3.19.0-66-powerpc64-emb

3.19.0-66.74~14.04.1
linux-image-3.19.0-66-generic

3.19.0-66.74~14.04.1
linux-image-3.19.0-66-powerpc-smp

3.19.0-66.74~14.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-1237,

CVE-2016-4470,

CVE-2016-4794,

CVE-2016-5243

Ubuntu

USN-3052-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3052-1

10th August, 2016

linux vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 14.04 LTS:
linux-image-3.13.0-93-lowlatency

3.13.0-93.140
linux-image-3.13.0-93-powerpc-e500mc

3.13.0-93.140
linux-image-3.13.0-93-powerpc64-emb

3.13.0-93.140
linux-image-3.13.0-93-powerpc-e500

3.13.0-93.140
linux-image-3.13.0-93-generic

3.13.0-93.140
linux-image-3.13.0-93-powerpc-smp

3.13.0-93.140
linux-image-3.13.0-93-generic-lpae

3.13.0-93.140
linux-image-3.13.0-93-powerpc64-smp

3.13.0-93.140

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-4470,

CVE-2016-5243

Ubuntu

USN-3054-1: Linux kernel (Xenial HWE) vulnerabilities

Ubuntu Security Notice USN-3054-1

10th August, 2016

linux-lts-xenial vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-lts-xenial
    – Linux hardware enablement kernel from Xenial for Trusty

Details

Ben Hawkes discovered an integer overflow in the Linux netfilter
implementation. On systems running 32 bit kernels, a local unprivileged
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code with administrative privileges.
(CVE-2016-3135)

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Sasha Levin discovered that a use-after-free existed in the percpu
allocator in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-4794)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 14.04 LTS:
linux-image-4.4.0-34-generic-lpae

4.4.0-34.53~14.04.1
linux-image-4.4.0-34-powerpc-e500mc

4.4.0-34.53~14.04.1
linux-image-4.4.0-34-powerpc64-smp

4.4.0-34.53~14.04.1
linux-image-4.4.0-34-generic

4.4.0-34.53~14.04.1
linux-image-4.4.0-34-powerpc64-emb

4.4.0-34.53~14.04.1
linux-image-4.4.0-34-powerpc-smp

4.4.0-34.53~14.04.1
linux-image-4.4.0-34-lowlatency

4.4.0-34.53~14.04.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-3135,

CVE-2016-4470,

CVE-2016-4794,

CVE-2016-5243

Ubuntu

USN-3056-1: Linux kernel (Raspberry Pi 2) vulnerabilities

Ubuntu Security Notice USN-3056-1

10th August, 2016

linux-raspi2 vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-raspi2
    – Linux kernel for Raspberry Pi 2

Details

Ben Hawkes discovered an integer overflow in the Linux netfilter
implementation. On systems running 32 bit kernels, a local unprivileged
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code with administrative privileges.
(CVE-2016-3135)

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Sasha Levin discovered that a use-after-free existed in the percpu
allocator in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-4794)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
linux-image-4.4.0-1019-raspi2

4.4.0-1019.25

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-3135,

CVE-2016-4470,

CVE-2016-4794,

CVE-2016-5243

Ubuntu

USN-3055-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-3055-1

10th August, 2016

linux vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

Ben Hawkes discovered an integer overflow in the Linux netfilter
implementation. On systems running 32 bit kernels, a local unprivileged
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code with administrative privileges.
(CVE-2016-3135)

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Sasha Levin discovered that a use-after-free existed in the percpu
allocator in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-4794)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
linux-image-4.4.0-34-generic

4.4.0-34.53
linux-image-4.4.0-34-powerpc-e500mc

4.4.0-34.53
linux-image-4.4.0-34-powerpc64-smp

4.4.0-34.53
linux-image-4.4.0-34-generic-lpae

4.4.0-34.53
linux-image-4.4.0-34-powerpc64-emb

4.4.0-34.53
linux-image-4.4.0-34-powerpc-smp

4.4.0-34.53
linux-image-4.4.0-34-lowlatency

4.4.0-34.53

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-3135,

CVE-2016-4470,

CVE-2016-4794,

CVE-2016-5243

Ubuntu

USN-3059-1: xmlrpc-epi vulnerability

Ubuntu Security Notice USN-3059-1

10th August, 2016

xmlrpc-epi vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS

Summary

xmlrpc-epi could be made to crash or run programs if it processed specially
crafted data.

Software description

  • xmlrpc-epi
    – a XML-RPC request library

Details

It was discovered that xmlrpc-epi incorrectly handled lengths in the
simplestring_addn function. A remote attacker could use this issue to cause
applications using xmlrpc-epi such as PHP to crash, resulting in a denial
of service, or possibly execute arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
libxmlrpc-epi0

0.54.2-1.1ubuntu0.1

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

CVE-2016-6296

Ubuntu

USN-3057-1: Linux kernel (Qualcomm Snapdragon) vulnerabilities

Ubuntu Security Notice USN-3057-1

10th August, 2016

linux-snapdragon vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in the kernel.

Software description

  • linux-snapdragon
    – Linux kernel for Snapdragon Processors

Details

Ben Hawkes discovered an integer overflow in the Linux netfilter
implementation. On systems running 32 bit kernels, a local unprivileged
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code with administrative privileges.
(CVE-2016-3135)

It was discovered that the keyring implementation in the Linux kernel did
not ensure a data structure was initialized before referencing it after an
error condition occurred. A local attacker could use this to cause a denial
of service (system crash). (CVE-2016-4470)

Sasha Levin discovered that a use-after-free existed in the percpu
allocator in the Linux kernel. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code with
administrative privileges. (CVE-2016-4794)

Kangjie Lu discovered an information leak in the netlink implementation of
the Linux kernel. A local attacker could use this to obtain sensitive
information from kernel memory. (CVE-2016-5243)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
linux-image-4.4.0-1022-snapdragon

4.4.0-1022.25

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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.

References

CVE-2016-3135,

CVE-2016-4470,

CVE-2016-4794,

CVE-2016-5243

Ubuntu

USN-3060-1: GD library vulnerabilities

Ubuntu Security Notice USN-3060-1

10th August, 2016

libgd2 vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

The GD library could be made to crash or run programs if it processed a
specially crafted image file.

Software description

  • libgd2
    – GD Graphics Library

Details

It was discovered that the GD library incorrectly handled certain malformed
TGA images. If a user or automated system were tricked into processing a
specially crafted TGA image, an attacker could cause a denial of service.
(CVE-2016-6132, CVE-2016-6214)

It was discovered that the GD library incorrectly handled memory when using
gdImageScale(). A remote attacker could possibly use this issue to cause a
denial of service or possibly execute arbitrary code. (CVE-2016-6207)

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 16.04 LTS:
libgd3

2.1.1-4ubuntu0.16.04.3
Ubuntu 14.04 LTS:
libgd3

2.1.0-3ubuntu0.3

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

CVE-2016-6132,

CVE-2016-6207,

CVE-2016-6214