Ubuntu Security Notice USN-2844-1

17th December, 2015

linux-lts-utopic 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-utopic
  – Linux hardware enablement kernel from Utopic

Details

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)

郭永刚 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)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.16.0-56-powerpc64-smp

3.16.0-56.75~14.04.1

linux-image-3.16.0-56-powerpc64-emb

3.16.0-56.75~14.04.1

linux-image-3.16.0-56-generic

3.16.0-56.75~14.04.1

linux-image-3.16.0-56-powerpc-e500mc

3.16.0-56.75~14.04.1

linux-image-3.16.0-56-lowlatency

3.16.0-56.75~14.04.1

linux-image-3.16.0-56-powerpc-smp

3.16.0-56.75~14.04.1

linux-image-3.16.0-56-generic-lpae

3.16.0-56.75~14.04.1

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-7799,

CVE-2015-7885,

CVE-2015-8104

Ubuntu Security Notice USN-2843-1

17th December, 2015

linux vulnerabilities

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

• Ubuntu 15.10

Summary

Several security issues were fixed in the kernel.

Software description

• linux
  – Linux kernel

Details

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)

郭永刚 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)

Dmitry Vyukov discovered that the Linux kernel’s keyring handler attempted
to garbage collect incompletely instantiated keys. A local unprivileged
attacker could use this to cause a denial of service (system crash).
(CVE-2015-7872)

It was discovered that the virtual video osd test driver in the Linux
kernel did not properly initialize data structures. A local attacker could
use this to obtain sensitive information from the kernel. (CVE-2015-7884)

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)

Update instructions

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

Ubuntu 15.10:

linux-image-4.2.0-21-powerpc64-emb

4.2.0-21.25

linux-image-4.2.0-21-powerpc-smp

4.2.0-21.25

linux-image-4.2.0-21-lowlatency

4.2.0-21.25

linux-image-4.2.0-21-generic-lpae

4.2.0-21.25

linux-image-4.2.0-21-generic

4.2.0-21.25

linux-image-4.2.0-21-powerpc-e500mc

4.2.0-21.25

linux-image-4.2.0-21-powerpc64-smp

4.2.0-21.25

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-7799,

CVE-2015-7872,

CVE-2015-7884,

CVE-2015-7885,

CVE-2015-8104

Ubuntu Security Notice USN-2842-2

17th December, 2015

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

Details

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)

郭永刚 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 virtual video osd test driver in the Linux
kernel did not properly initialize data structures. A local attacker could
use this to obtain sensitive information from the kernel. (CVE-2015-7884)

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)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.19.0-41-powerpc64-emb

3.19.0-41.46~14.04.2

linux-image-3.19.0-41-generic

3.19.0-41.46~14.04.2

linux-image-3.19.0-41-powerpc64-smp

3.19.0-41.46~14.04.2

linux-image-3.19.0-41-powerpc-e500mc

3.19.0-41.46~14.04.2

linux-image-3.19.0-41-lowlatency

3.19.0-41.46~14.04.2

linux-image-3.19.0-41-powerpc-smp

3.19.0-41.46~14.04.2

linux-image-3.19.0-41-generic-lpae

3.19.0-41.46~14.04.2

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-7799,

CVE-2015-7884,

CVE-2015-7885,

CVE-2015-8104

Ubuntu Security Notice USN-2843-3

17th December, 2015

linux-raspi2 vulnerabilities

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

• Ubuntu 15.10

Summary

Several security issues were fixed in the kernel.

Software description

• linux-raspi2
  – Linux kernel for Raspberry Pi 2

Details

郭永刚 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)

Dmitry Vyukov discovered that the Linux kernel’s keyring handler attempted
to garbage collect incompletely instantiated keys. A local unprivileged
attacker could use this to cause a denial of service (system crash).
(CVE-2015-7872)

It was discovered that the virtual video osd test driver in the Linux
kernel did not properly initialize data structures. A local attacker could
use this to obtain sensitive information from the kernel. (CVE-2015-7884)

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)

Update instructions

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

Ubuntu 15.10:

linux-image-4.2.0-1016-raspi2

4.2.0-1016.23

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-7799,

CVE-2015-7872,

CVE-2015-7884,

CVE-2015-7885

Ubuntu Security Notice USN-2843-2

17th December, 2015

linux-lts-wily 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-wily
  – Linux hardware enablement kernel from Wily

Details

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)

郭永刚 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)

Dmitry Vyukov discovered that the Linux kernel’s keyring handler attempted
to garbage collect incompletely instantiated keys. A local unprivileged
attacker could use this to cause a denial of service (system crash).
(CVE-2015-7872)

It was discovered that the virtual video osd test driver in the Linux
kernel did not properly initialize data structures. A local attacker could
use this to obtain sensitive information from the kernel. (CVE-2015-7884)

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)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-4.2.0-21-powerpc64-emb

4.2.0-21.25~14.04.1

linux-image-4.2.0-21-powerpc-smp

4.2.0-21.25~14.04.1

linux-image-4.2.0-21-lowlatency

4.2.0-21.25~14.04.1

linux-image-4.2.0-21-generic-lpae

4.2.0-21.25~14.04.1

linux-image-4.2.0-21-generic

4.2.0-21.25~14.04.1

linux-image-4.2.0-21-powerpc-e500mc

4.2.0-21.25~14.04.1

linux-image-4.2.0-21-powerpc64-smp

4.2.0-21.25~14.04.1

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-7799,

CVE-2015-7872,

CVE-2015-7884,

CVE-2015-7885,

CVE-2015-8104

Ubuntu Security Notice USN-2840-2

17th December, 2015

linux-ti-omap4 vulnerability

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

• Ubuntu 12.04 LTS

Summary

The system could be made to crash under certain conditions.

Software description

• linux-ti-omap4
  – Linux kernel for OMAP4

Details

Dmitry Vyukov discovered that the Linux kernel’s keyring handler attempted
to garbage collect incompletely instantiated keys. A local unprivileged
attacker could use this to cause a denial of service (system crash).

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-1475-omap4

3.2.0-1475.97

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. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

CVE-2015-7872

Ubuntu Security Notice USN-2838-2

16th December, 2015

foomatic-filters vulnerability

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

• Ubuntu 12.04 LTS

Summary

foomatic-filters could be made to run programs as the lp user if it
processed a specially crafted print job.

Software description

• foomatic-filters
  – OpenPrinting printer support – filters

Details

Adam Chester discovered that the foomatic-filters foomatic-rip filter
incorrectly stripped shell escape characters. A remote attacker could
possibly use this issue to execute arbitrary code as the lp user.

Update instructions

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

Ubuntu 12.04 LTS:

foomatic-filters

4.0.16-0ubuntu0.4

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-2015-8560

Ubuntu Security Notice USN-2838-1

16th December, 2015

cups-filters vulnerability

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS

Summary

cups-filters could be made to run programs as the lp user if it processed a
specially crafted print job.

Software description

• cups-filters
  – OpenPrinting CUPS Filters

Details

Adam Chester discovered that the cups-filters foomatic-rip filter
incorrectly stripped shell escape characters. A remote attacker could
possibly use this issue to execute arbitrary code as the lp user.

Update instructions

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

Ubuntu 15.10:

cups-filters

1.0.76-1ubuntu0.2

Ubuntu 15.04:

cups-filters

1.0.67-0ubuntu2.6

Ubuntu 14.04 LTS:

cups-filters

1.0.52-0ubuntu1.7

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-2015-8560

Ubuntu Security Notice USN-2839-1

16th December, 2015

cups update

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

• Ubuntu 14.04 LTS

Summary

A security improvement has been made to CUPS.

Software description

• cups
  – Common UNIX Printing System(tm)

Details

As a security improvement against the POODLE attack, this update disables
SSLv3 support in the CUPS web interface.

For legacy environments where SSLv3 support is still required, it can be
re-enabled by adding “SSLOptions AllowSSL3” to /etc/cups/cupsd.conf.

Update instructions

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

Ubuntu 14.04 LTS:

cups

1.7.2-0ubuntu1.7

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

LP: 1505328

Ubuntu Security Notice USN-2835-1

15th December, 2015

git vulnerability

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

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Git could be made to run programs as your login if it processed an
untrusted repository.

Software description

• git
  – fast, scalable, distributed revision control system

Details

Blake Burkhart discovered that the Git git-remote-ext helper incorrectly
handled recursive clones of git repositories. A remote attacker could
possibly use this issue to execute arbitrary code by injecting commands
via crafted URLs.

Update instructions

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

Ubuntu 15.10:

git

1:2.5.0-1ubuntu0.1

Ubuntu 15.04:

git

1:2.1.4-2.1ubuntu0.1

Ubuntu 14.04 LTS:

git

1:1.9.1-1ubuntu0.2

Ubuntu 12.04 LTS:

git

1:1.7.9.5-1ubuntu0.2

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-2015-7545