Ubuntu Security Notice USN-2686-1

27th July, 2015

apache2 vulnerabilities

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

• Ubuntu 15.04
• Ubuntu 14.04 LTS
• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in the Apache HTTP server.

Software description

• apache2
  – Apache HTTP server

Details

It was discovered that the Apache HTTP Server incorrectly parsed chunk
headers. A remote attacker could possibly use this issue to perform HTTP
request smuggling attacks. (CVE-2015-3183)

It was discovered that the Apache HTTP Server incorrectly handled the
ap_some_auth_required API. A remote attacker could possibly use this issue
to bypass intended access restrictions. This issue only affected Ubuntu
14.04 LTS and Ubuntu 15.04. (CVE-2015-3185)

Update instructions

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

Ubuntu 15.04:

apache2.2-bin

2.4.10-9ubuntu1.1

Ubuntu 14.04 LTS:

apache2.2-bin

2.4.7-1ubuntu4.5

Ubuntu 12.04 LTS:

apache2.2-bin

2.2.22-1ubuntu1.10

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-2015-3183,

CVE-2015-3185

Ubuntu Security Notice USN-2690-1

28th July, 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

Andy Lutomirski discovered a flaw in the Linux kernel’s handling of nested
NMIs (non-maskable interrupts). An unprivileged local user could exploit
this flaw to cause a denial of service (system crash) or potentially
escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel’s
keyring subsystem. A local user could exploit this flaw to cause a denial
of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux
kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged
user could exploit this flaw to potentially cause the system to miss
important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable
interrupt) that interrupts userspace and encounters an IRET fault is
incorrectly handled by the Linux kernel. An unprivileged local user could
exploit this flaw to cause a denial of service (kernel OOPs), corruption,
or potentially escalate privileges on the system. (CVE-2015-5157)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.19.0-25-generic

3.19.0-25.26~14.04.1

linux-image-3.19.0-25-powerpc64-emb

3.19.0-25.26~14.04.1

linux-image-3.19.0-25-lowlatency

3.19.0-25.26~14.04.1

linux-image-3.19.0-25-powerpc64-smp

3.19.0-25.26~14.04.1

linux-image-3.19.0-25-generic-lpae

3.19.0-25.26~14.04.1

linux-image-3.19.0-25-powerpc-smp

3.19.0-25.26~14.04.1

linux-image-3.19.0-25-powerpc-e500mc

3.19.0-25.26~14.04.1

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-2015-1333,

CVE-2015-3290,

CVE-2015-3291,

CVE-2015-5157

Ubuntu Security Notice USN-2689-1

28th July, 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

Andy Lutomirski discovered a flaw in the Linux kernel’s handling of nested
NMIs (non-maskable interrupts). An unprivileged local user could exploit
this flaw to cause a denial of service (system crash) or potentially
escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel’s
keyring subsystem. A local user could exploit this flaw to cause a denial
of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux
kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged
user could exploit this flaw to potentially cause the system to miss
important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable
interrupt) that interrupts userspace and encounters an IRET fault is
incorrectly handled by the Linux kernel. An unprivileged local user could
exploit this flaw to cause a denial of service (kernel OOPs), corruption,
or potentially escalate privileges on the system. (CVE-2015-5157)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.16.0-45-powerpc64-smp

3.16.0-45.60~14.04.1

linux-image-3.16.0-45-lowlatency

3.16.0-45.60~14.04.1

linux-image-3.16.0-45-generic

3.16.0-45.60~14.04.1

linux-image-3.16.0-45-powerpc-e500mc

3.16.0-45.60~14.04.1

linux-image-3.16.0-45-powerpc64-emb

3.16.0-45.60~14.04.1

linux-image-3.16.0-45-powerpc-smp

3.16.0-45.60~14.04.1

linux-image-3.16.0-45-generic-lpae

3.16.0-45.60~14.04.1

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-2015-1333,

CVE-2015-3290,

CVE-2015-3291,

CVE-2015-5157

Ubuntu Security Notice USN-2688-1

28th July, 2015

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

Andy Lutomirski discovered a flaw in the Linux kernel’s handling of nested
NMIs (non-maskable interrupts). An unprivileged local user could exploit
this flaw to cause a denial of service (system crash) or potentially
escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel’s
keyring subsystem. A local user could exploit this flaw to cause a denial
of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux
kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged
user could exploit this flaw to potentially cause the system to miss
important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable
interrupt) that interrupts userspace and encounters an IRET fault is
incorrectly handled by the Linux kernel. An unprivileged local user could
exploit this flaw to cause a denial of service (kernel OOPs), corruption,
or potentially escalate privileges on the system. (CVE-2015-5157)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.13.0-59-generic

3.13.0-59.98

linux-image-3.13.0-59-powerpc-e500mc

3.13.0-59.98

linux-image-3.13.0-59-lowlatency

3.13.0-59.98

linux-image-3.13.0-59-powerpc-smp

3.13.0-59.98

linux-image-3.13.0-59-powerpc-e500

3.13.0-59.98

linux-image-3.13.0-59-generic-lpae

3.13.0-59.98

linux-image-3.13.0-59-powerpc64-smp

3.13.0-59.98

linux-image-3.13.0-59-powerpc64-emb

3.13.0-59.98

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-2015-1333,

CVE-2015-3290,

CVE-2015-3291,

CVE-2015-5157

Ubuntu Security Notice USN-2691-1

28th July, 2015

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

Andy Lutomirski discovered a flaw in the Linux kernel’s handling of nested
NMIs (non-maskable interrupts). An unprivileged local user could exploit
this flaw to cause a denial of service (system crash) or potentially
escalate their privileges. (CVE-2015-3290)

Colin King discovered a flaw in the add_key function of the Linux kernel’s
keyring subsystem. A local user could exploit this flaw to cause a denial
of service (memory exhaustion). (CVE-2015-1333)

Andy Lutomirski discovered a flaw that allows user to cause the Linux
kernel to ignore some NMIs (non-maskable interrupts). A local unprivileged
user could exploit this flaw to potentially cause the system to miss
important NMIs resulting in unspecified effects. (CVE-2015-3291)

Andy Lutomirski and Petr Matousek discovered that an NMI (non-maskable
interrupt) that interrupts userspace and encounters an IRET fault is
incorrectly handled by the Linux kernel. An unprivileged local user could
exploit this flaw to cause a denial of service (kernel OOPs), corruption,
or potentially escalate privileges on the system. (CVE-2015-5157)

Update instructions

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

Ubuntu 15.04:

linux-image-3.19.0-25-generic

3.19.0-25.26

linux-image-3.19.0-25-powerpc64-emb

3.19.0-25.26

linux-image-3.19.0-25-lowlatency

3.19.0-25.26

linux-image-3.19.0-25-powerpc64-smp

3.19.0-25.26

linux-image-3.19.0-25-generic-lpae

3.19.0-25.26

linux-image-3.19.0-25-powerpc-smp

3.19.0-25.26

linux-image-3.19.0-25-powerpc-e500mc

3.19.0-25.26

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-2015-1333,

CVE-2015-3290,

CVE-2015-3291,

CVE-2015-5157

Ubuntu Security Notice USN-2678-1

23rd July, 2015

linux 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
  – Linux kernel

Details

A flaw was discovered in the user space memory copying for the pipe iovecs
in the Linux kernel. An unprivileged local user could exploit this flaw to
cause a denial of service (system crash) or potentially escalate their
privileges. (CVE-2015-1805)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-88-generic-pae

3.2.0-88.126

linux-image-3.2.0-88-powerpc64-smp

3.2.0-88.126

linux-image-3.2.0-88-virtual

3.2.0-88.126

linux-image-3.2.0-88-omap

3.2.0-88.126

linux-image-3.2.0-88-generic

3.2.0-88.126

linux-image-3.2.0-88-powerpc-smp

3.2.0-88.126

linux-image-3.2.0-88-highbank

3.2.0-88.126

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-2015-1805,

CVE-2015-4700

Ubuntu Security Notice USN-2681-1

23rd July, 2015

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

A flaw was discovered in the user space memory copying for the pipe iovecs
in the Linux kernel. An unprivileged local user could exploit this flaw to
cause a denial of service (system crash) or potentially escalate their
privileges. (CVE-2015-1805)

A flaw was discovered in the kvm (kernel virtual machine) subsystem’s
kvm_apic_has_events function. A unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-4692)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions

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

Ubuntu 14.04 LTS:

linux-image-3.13.0-58-powerpc64-smp

3.13.0-58.97

linux-image-3.13.0-58-powerpc-e500

3.13.0-58.97

linux-image-3.13.0-58-generic

3.13.0-58.97

linux-image-3.13.0-58-powerpc-smp

3.13.0-58.97

linux-image-3.13.0-58-powerpc64-emb

3.13.0-58.97

linux-image-3.13.0-58-generic-lpae

3.13.0-58.97

linux-image-3.13.0-58-lowlatency

3.13.0-58.97

linux-image-3.13.0-58-powerpc-e500mc

3.13.0-58.97

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-2015-1805,

CVE-2015-4692,

CVE-2015-4700,

CVE-2015-5364,

CVE-2015-5366

Ubuntu Security Notice USN-2680-1

23rd July, 2015

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

A flaw was discovered in the user space memory copying for the pipe iovecs
in the Linux kernel. An unprivileged local user could exploit this flaw to
cause a denial of service (system crash) or potentially escalate their
privileges. (CVE-2015-1805)

A flaw was discovered in the kvm (kernel virtual machine) subsystem’s
kvm_apic_has_events function. A unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-4692)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.13.0-58-generic

3.13.0-58.97~precise1

linux-image-3.13.0-58-generic-lpae

3.13.0-58.97~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. 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-2015-1805,

CVE-2015-4692,

CVE-2015-4700,

CVE-2015-5364,

CVE-2015-5366

Ubuntu Security Notice USN-2679-1

23rd July, 2015

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

A flaw was discovered in the user space memory copying for the pipe iovecs
in the Linux kernel. An unprivileged local user could exploit this flaw to
cause a denial of service (system crash) or potentially escalate their
privileges. (CVE-2015-1805)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

Update instructions

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

Ubuntu 12.04 LTS:

linux-image-3.2.0-1468-omap4

3.2.0-1468.89

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-2015-1805,

CVE-2015-4700

Ubuntu Security Notice USN-2684-1

23rd July, 2015

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

A flaw was discovered in the kvm (kernel virtual machine) subsystem’s
kvm_apic_has_events function. A unprivileged local user could exploit this
flaw to cause a denial of service (system crash). (CVE-2015-4692)

Daniel Borkmann reported a kernel crash in the Linux kernel’s BPF filter
JIT optimization. A local attacker could exploit this flaw to cause a
denial of service (system crash). (CVE-2015-4700)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker could exploit this flaw to cause a denial of
service using a flood of UDP packets with invalid checksums.
(CVE-2015-5364)

A flaw was discovered in how the Linux kernel handles invalid UDP
checksums. A remote attacker can cause a denial of service against
applications that use epoll by injecting a single packet with an invalid
checksum. (CVE-2015-5366)

Update instructions

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

Ubuntu 15.04:

linux-image-3.19.0-23-powerpc64-smp

3.19.0-23.24

linux-image-3.19.0-23-generic

3.19.0-23.24

linux-image-3.19.0-23-powerpc64-emb

3.19.0-23.24

linux-image-3.19.0-23-powerpc-smp

3.19.0-23.24

linux-image-3.19.0-23-generic-lpae

3.19.0-23.24

linux-image-3.19.0-23-lowlatency

3.19.0-23.24

linux-image-3.19.0-23-powerpc-e500mc

3.19.0-23.24

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-2015-4692,

CVE-2015-4700,

CVE-2015-5364,

CVE-2015-5366