Category Archives: Ubuntu

Ubuntu Security Notices

Ubuntu

USN-2884-1: OpenJDK 7 vulnerabilities

Ubuntu Security Notice USN-2884-1

1st February, 2016

openjdk-7 vulnerabilities

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

  • Ubuntu 15.10
  • Ubuntu 15.04
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in OpenJDK 7.

Software description

  • openjdk-7
    – Open Source Java implementation

Details

Multiple vulnerabilities were discovered in the OpenJDK JRE related
to information disclosure, data integrity, and availability. An
attacker could exploit these to cause a denial of service, expose
sensitive data over the network, or possibly execute arbitrary code.
(CVE-2016-0483, CVE-2016-0494)

A vulnerability was discovered in the OpenJDK JRE related to data
integrity. An attacker could exploit this to expose sensitive data
over the network or possibly execute arbitrary code. (CVE-2016-0402)

It was discovered that OpenJDK 7 incorrectly allowed MD5 to be used
for TLS connections. If a remote attacker were able to perform a
man-in-the-middle attack, this flaw could be exploited to expose
sensitive information. (CVE-2015-7575)

A vulnerability was discovered in the OpenJDK JRE related to
information disclosure. An attacker could exploit this to expose
sensitive data over the network. (CVE-2016-0448)

A vulnerability was discovered in the OpenJDK JRE related to
availability. An attacker could exploit this to cause a denial of
service. (CVE-2016-0466)

Update instructions

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

Ubuntu 15.10:
openjdk-7-jre-lib

7u95-2.6.4-0ubuntu0.15.10.1
openjdk-7-jre-zero

7u95-2.6.4-0ubuntu0.15.10.1
icedtea-7-jre-jamvm

7u95-2.6.4-0ubuntu0.15.10.1
openjdk-7-jre-headless

7u95-2.6.4-0ubuntu0.15.10.1
openjdk-7-jre

7u95-2.6.4-0ubuntu0.15.10.1
Ubuntu 15.04:
openjdk-7-jre-lib

7u95-2.6.4-0ubuntu0.15.04.1
openjdk-7-jre-zero

7u95-2.6.4-0ubuntu0.15.04.1
icedtea-7-jre-jamvm

7u95-2.6.4-0ubuntu0.15.04.1
openjdk-7-jre-headless

7u95-2.6.4-0ubuntu0.15.04.1
openjdk-7-jre

7u95-2.6.4-0ubuntu0.15.04.1
Ubuntu 14.04 LTS:
openjdk-7-jre-lib

7u95-2.6.4-0ubuntu0.14.04.1
openjdk-7-jre-zero

7u95-2.6.4-0ubuntu0.14.04.1
icedtea-7-jre-jamvm

7u95-2.6.4-0ubuntu0.14.04.1
openjdk-7-jre-headless

7u95-2.6.4-0ubuntu0.14.04.1
openjdk-7-jre

7u95-2.6.4-0ubuntu0.14.04.1

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

This update uses a new upstream release, which includes additional
bug fixes. After a standard system update you need to restart any
Java applications or applets to make all the necessary changes.

References

CVE-2015-7575,

CVE-2016-0402,

CVE-2016-0448,

CVE-2016-0466,

CVE-2016-0483,

CVE-2016-0494

Ubuntu

USN-2886-2: Linux kernel (OMAP4) vulnerabilities

Ubuntu Security Notice USN-2886-2

1st February, 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

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

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)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

郭永刚 discovered that the Linux kernel networking implementation did
not validate protocol identifiers for certain protocol families, A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2015-8543)

Felix Wilhelm discovered a race condition in the Xen paravirtualized
drivers which can cause double fetch vulnerabilities. An attacker in the
paravirtualized guest could exploit this flaw to cause a denial of service
(crash the host) or potentially execute arbitrary code on the host.
(CVE-2015-8550)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
did not verify an address length when setting up a socket. A local attacker
could use this to craft an application that exposed sensitive information
from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for Synchronous
Connection-Oriented (SCO) sockets. A local attacker could use this to
expose sensitive information. (CVE-2015-8575)

It was discovered that the Linux kernel’s Filesystem in Userspace (FUSE)
implementation did not handle initial zero length segments properly. A
local attacker could use this to cause a denial of service (unkillable
task). (CVE-2015-8785)

Update instructions

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

Ubuntu 12.04 LTS:
linux-image-3.2.0-1476-omap4

3.2.0-1476.99

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-2013-7446,

CVE-2015-7513,

CVE-2015-7799,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8543,

CVE-2015-8550,

CVE-2015-8569,

CVE-2015-8575,

CVE-2015-8785

Ubuntu

USN-2887-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2887-1

1st February, 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 a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.13.0-77-powerpc64-emb

3.13.0-77.121
linux-image-3.13.0-77-generic

3.13.0-77.121
linux-image-3.13.0-77-powerpc-e500mc

3.13.0-77.121
linux-image-3.13.0-77-lowlatency

3.13.0-77.121
linux-image-3.13.0-77-powerpc-smp

3.13.0-77.121
linux-image-3.13.0-77-powerpc-e500

3.13.0-77.121
linux-image-3.13.0-77-powerpc64-smp

3.13.0-77.121
linux-image-3.13.0-77-generic-lpae

3.13.0-77.121

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-2013-7446,

CVE-2015-7513,

CVE-2015-7990,

CVE-2015-8374

Ubuntu

USN-2888-1: Linux kernel (Utopic HWE) vulnerabilities

Ubuntu Security Notice USN-2888-1

1st February, 2016

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

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

It was discovered that the Linux kernel keyring subsystem contained a race
between read and revoke operations. A local attacker could use this to
cause a denial of service (system crash). (CVE-2015-7550)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

郭永刚 discovered that the Linux kernel networking implementation did
not validate protocol identifiers for certain protocol families, A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
did not verify an address length when setting up a socket. A local attacker
could use this to craft an application that exposed sensitive information
from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for Synchronous
Connection-Oriented (SCO) sockets. A local attacker could use this to
expose sensitive information. (CVE-2015-8575)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.16.0-60-powerpc64-smp

3.16.0-60.80~14.04.1
linux-image-3.16.0-60-lowlatency

3.16.0-60.80~14.04.1
linux-image-3.16.0-60-generic

3.16.0-60.80~14.04.1
linux-image-3.16.0-60-generic-lpae

3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc-e500mc

3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc64-emb

3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc-smp

3.16.0-60.80~14.04.1

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-2013-7446,

CVE-2015-7513,

CVE-2015-7550,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8543,

CVE-2015-8569,

CVE-2015-8575

Ubuntu

USN-2887-2: Linux kernel (Trusty HWE) vulnerabilities

Ubuntu Security Notice USN-2887-2

1st February, 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

Details

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

Update instructions

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

Ubuntu 12.04 LTS:
linux-image-3.13.0-77-generic

3.13.0-77.121~precise1
linux-image-3.13.0-77-generic-lpae

3.13.0-77.121~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-2013-7446,

CVE-2015-7513,

CVE-2015-7990,

CVE-2015-8374

Ubuntu

USN-2890-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2890-1

1st February, 2016

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

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

It was discovered that the Linux kernel keyring subsystem contained a race
between read and revoke operations. A local attacker could use this to
cause a denial of service (system crash). (CVE-2015-7550)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

郭永刚 discovered that the Linux kernel networking implementation did
not validate protocol identifiers for certain protocol families, A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
did not verify an address length when setting up a socket. A local attacker
could use this to craft an application that exposed sensitive information
from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for Synchronous
Connection-Oriented (SCO) sockets. A local attacker could use this to
expose sensitive information. (CVE-2015-8575)

It was discovered that the netfilter Network Address Translation (NAT)
implementation did not ensure that data structures were initialized when
handling IPv4 addresses. An attacker could use this to cause a denial of
service (system crash). (CVE-2015-8787)

Update instructions

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

Ubuntu 15.10:
linux-image-4.2.0-27-lowlatency

4.2.0-27.32
linux-image-4.2.0-27-generic-lpae

4.2.0-27.32
linux-image-4.2.0-27-powerpc-e500mc

4.2.0-27.32
linux-image-4.2.0-27-powerpc64-emb

4.2.0-27.32
linux-image-4.2.0-27-powerpc-smp

4.2.0-27.32
linux-image-4.2.0-27-powerpc64-smp

4.2.0-27.32
linux-image-4.2.0-27-generic

4.2.0-27.32

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-2013-7446,

CVE-2015-7513,

CVE-2015-7550,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8543,

CVE-2015-8569,

CVE-2015-8575,

CVE-2015-8787

Ubuntu

USN-2889-2: Linux kernel (Vivid HWE) vulnerabilities

Ubuntu Security Notice USN-2889-2

1st February, 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

Details

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

It was discovered that the netfilter Network Address Translation (NAT)
implementation did not ensure that data structures were initialized when
handling IPv4 addresses. An attacker could use this to cause a denial of
service (system crash). (CVE-2015-8787)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-3.19.0-49-powerpc-smp

3.19.0-49.55~14.04.1
linux-image-3.19.0-49-powerpc-e500mc

3.19.0-49.55~14.04.1
linux-image-3.19.0-49-lowlatency

3.19.0-49.55~14.04.1
linux-image-3.19.0-49-generic-lpae

3.19.0-49.55~14.04.1
linux-image-3.19.0-49-powerpc64-emb

3.19.0-49.55~14.04.1
linux-image-3.19.0-49-generic

3.19.0-49.55~14.04.1
linux-image-3.19.0-49-powerpc64-smp

3.19.0-49.55~14.04.1

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-2013-7446,

CVE-2015-7513,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8787

Ubuntu

USN-2889-1: Linux kernel vulnerabilities

Ubuntu Security Notice USN-2889-1

1st February, 2016

linux vulnerabilities

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

  • Ubuntu 15.04

Summary

Several security issues were fixed in the kernel.

Software description

  • linux
    – Linux kernel

Details

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

It was discovered that the netfilter Network Address Translation (NAT)
implementation did not ensure that data structures were initialized when
handling IPv4 addresses. An attacker could use this to cause a denial of
service (system crash). (CVE-2015-8787)

Update instructions

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

Ubuntu 15.04:
linux-image-3.19.0-49-powerpc-smp

3.19.0-49.55
linux-image-3.19.0-49-powerpc-e500mc

3.19.0-49.55
linux-image-3.19.0-49-lowlatency

3.19.0-49.55
linux-image-3.19.0-49-generic-lpae

3.19.0-49.55
linux-image-3.19.0-49-powerpc64-emb

3.19.0-49.55
linux-image-3.19.0-49-generic

3.19.0-49.55
linux-image-3.19.0-49-powerpc64-smp

3.19.0-49.55

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-2013-7446,

CVE-2015-7513,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8787

Ubuntu

USN-2890-3: Linux kernel (Raspberry Pi 2) vulnerabilities

Ubuntu Security Notice USN-2890-3

1st February, 2016

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

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

It was discovered that the Linux kernel keyring subsystem contained a race
between read and revoke operations. A local attacker could use this to
cause a denial of service (system crash). (CVE-2015-7550)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

郭永刚 discovered that the Linux kernel networking implementation did
not validate protocol identifiers for certain protocol families, A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
did not verify an address length when setting up a socket. A local attacker
could use this to craft an application that exposed sensitive information
from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for Synchronous
Connection-Oriented (SCO) sockets. A local attacker could use this to
expose sensitive information. (CVE-2015-8575)

It was discovered that the netfilter Network Address Translation (NAT)
implementation did not ensure that data structures were initialized when
handling IPv4 addresses. An attacker could use this to cause a denial of
service (system crash). (CVE-2015-8787)

Update instructions

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

Ubuntu 15.10:
linux-image-4.2.0-1022-raspi2

4.2.0-1022.29

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-2013-7446,

CVE-2015-7513,

CVE-2015-7550,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8543,

CVE-2015-8569,

CVE-2015-8575,

CVE-2015-8787

Ubuntu

USN-2890-2: Linux kernel (Wily HWE) vulnerabilities

Ubuntu Security Notice USN-2890-2

1st February, 2016

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

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

It was discovered that the Linux kernel keyring subsystem contained a race
between read and revoke operations. A local attacker could use this to
cause a denial of service (system crash). (CVE-2015-7550)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

郭永刚 discovered that the Linux kernel networking implementation did
not validate protocol identifiers for certain protocol families, A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
did not verify an address length when setting up a socket. A local attacker
could use this to craft an application that exposed sensitive information
from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for Synchronous
Connection-Oriented (SCO) sockets. A local attacker could use this to
expose sensitive information. (CVE-2015-8575)

It was discovered that the netfilter Network Address Translation (NAT)
implementation did not ensure that data structures were initialized when
handling IPv4 addresses. An attacker could use this to cause a denial of
service (system crash). (CVE-2015-8787)

Update instructions

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

Ubuntu 14.04 LTS:
linux-image-4.2.0-27-lowlatency

4.2.0-27.32~14.04.1
linux-image-4.2.0-27-generic-lpae

4.2.0-27.32~14.04.1
linux-image-4.2.0-27-powerpc-e500mc

4.2.0-27.32~14.04.1
linux-image-4.2.0-27-powerpc64-emb

4.2.0-27.32~14.04.1
linux-image-4.2.0-27-powerpc-smp

4.2.0-27.32~14.04.1
linux-image-4.2.0-27-powerpc64-smp

4.2.0-27.32~14.04.1
linux-image-4.2.0-27-generic

4.2.0-27.32~14.04.1

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-2013-7446,

CVE-2015-7513,

CVE-2015-7550,

CVE-2015-7990,

CVE-2015-8374,

CVE-2015-8543,

CVE-2015-8569,

CVE-2015-8575,

CVE-2015-8787