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Ranjivosti jezgre operacijskog sustava

  • Detalji os-a: WN7
  • Važnost: IMP
  • Operativni sustavi: L
  • Kategorije: LUB

==========================================================================
Kernel Live Patch Security Notice LSN-0013-1
November 30, 2016

linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu:

| Series | Base kernel | Arch | flavors |
|——————+————–+———-+——————|
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 16.04 LTS | 4.4.0 | amd64 | lowlatency |

Summary:

Several security issues were fixed in the kernel.

Software Description:
– linux: Linux kernel

Details:

Ondrej Kozina discovered that the keyring interface in the Linux kernel
contained a buffer overflow when displaying timeout events via the
/proc/keys interface. A local attacker could use this to cause a denial of
service (system crash). (CVE-2016-7042)

Dmitry Vyukov discovered a use-after-free vulnerability during error
processing in the recvmmsg(2) implementation in the Linux kernel. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2016-7117)

Marco Grassi discovered that the driver for Areca RAID Controllers in the
Linux kernel did not properly validate control messages. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-7425)

Daxing Guo discovered a stack-based buffer overflow in the Broadcom
IEEE802.11n FullMAC driver in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-8658)

Update instructions:

The problem can be corrected by updating your livepatches to the following
versions:

| Kernel | Version | flavors |
|—————–+———-+————————–|
| 4.4.0-21.37 | 14.1 | generic, lowlatency |
| 4.4.0-22.39 | 14.1 | generic, lowlatency |
| 4.4.0-22.40 | 14.1 | generic, lowlatency |
| 4.4.0-24.43 | 14.1 | generic, lowlatency |
| 4.4.0-28.47 | 14.1 | generic, lowlatency |
| 4.4.0-31.50 | 14.1 | generic, lowlatency |
| 4.4.0-34.53 | 14.1 | generic, lowlatency |
| 4.4.0-36.55 | 14.1 | generic, lowlatency |
| 4.4.0-38.57 | 14.1 | generic, lowlatency |
| 4.4.0-42.62 | 14.1 | generic, lowlatency |
| 4.4.0-43.63 | 14.1 | generic, lowlatency |
| 4.4.0-45.66 | 14.1 | generic, lowlatency |
| 4.4.0-47.68 | 14.1 | generic, lowlatency |

Additionally, you should install an updated kernel with these fixes and
reboot at your convienience.

References:
CVE-2016-7042, CVE-2016-7117, CVE-2016-7425, CVE-2016-8658
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==========================================================================
Ubuntu Security Notice USN-3146-1
November 30, 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:

It was discovered that the __get_user_asm_ex implementation in the Linux
kernel for x86/x86_64 contained extended asm statements that were
incompatible with the exception table. A local attacker could use this to
gain administrative privileges. (CVE-2016-9644)

Andreas Gruenbacher and Jan Kara discovered that the filesystem
implementation in the Linux kernel did not clear the setgid bit during a
setxattr call. A local attacker could use this to possibly elevate group
privileges. (CVE-2016-7097)

Marco Grassi discovered that the driver for Areca RAID Controllers in the
Linux kernel did not properly validate control messages. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-7425)

Daxing Guo discovered a stack-based buffer overflow in the Broadcom
IEEE802.11n FullMAC driver in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-8658)

Update instructions:

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

Ubuntu 16.04 LTS:
linux-image-4.4.0-51-generic 4.4.0-51.72
linux-image-4.4.0-51-generic-lpae 4.4.0-51.72
linux-image-4.4.0-51-lowlatency 4.4.0-51.72
linux-image-4.4.0-51-powerpc-e500mc 4.4.0-51.72
linux-image-4.4.0-51-powerpc-smp 4.4.0-51.72
linux-image-4.4.0-51-powerpc64-emb 4.4.0-51.72
linux-image-4.4.0-51-powerpc64-smp 4.4.0-51.72
linux-image-generic 4.4.0.51.54
linux-image-generic-lpae 4.4.0.51.54
linux-image-lowlatency 4.4.0.51.54
linux-image-powerpc-e500mc 4.4.0.51.54
linux-image-powerpc-smp 4.4.0.51.54
linux-image-powerpc64-emb 4.4.0.51.54
linux-image-powerpc64-smp 4.4.0.51.54

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:
http://www.ubuntu.com/usn/usn-3146-1
CVE-2016-7097, CVE-2016-7425, CVE-2016-8658, CVE-2016-9644

Package Information:
https://launchpad.net/ubuntu/+source/linux/4.4.0-51.72

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==========================================================================
Ubuntu Security Notice USN-3146-2
November 30, 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:

USN-3146-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

It was discovered that the __get_user_asm_ex implementation in the Linux
kernel for x86/x86_64 contained extended asm statements that were
incompatible with the exception table. A local attacker could use this to
gain administrative privileges. (CVE-2016-9644)

Andreas Gruenbacher and Jan Kara discovered that the filesystem
implementation in the Linux kernel did not clear the setgid bit during a
setxattr call. A local attacker could use this to possibly elevate group
privileges. (CVE-2016-7097)

Marco Grassi discovered that the driver for Areca RAID Controllers in the
Linux kernel did not properly validate control messages. A local attacker
could use this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-7425)

Daxing Guo discovered a stack-based buffer overflow in the Broadcom
IEEE802.11n FullMAC driver in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash) or possibly gain
privileges. (CVE-2016-8658)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-4.4.0-51-generic 4.4.0-51.72~14.04.1
linux-image-4.4.0-51-generic-lpae 4.4.0-51.72~14.04.1
linux-image-4.4.0-51-lowlatency 4.4.0-51.72~14.04.1
linux-image-4.4.0-51-powerpc-e500mc 4.4.0-51.72~14.04.1
linux-image-4.4.0-51-powerpc-smp 4.4.0-51.72~14.04.1
linux-image-4.4.0-51-powerpc64-emb 4.4.0-51.72~14.04.1
linux-image-4.4.0-51-powerpc64-smp 4.4.0-51.72~14.04.1
linux-image-generic-lpae-lts-xenial 4.4.0.51.38
linux-image-generic-lts-xenial 4.4.0.51.38
linux-image-lowlatency-lts-xenial 4.4.0.51.38
linux-image-powerpc-e500mc-lts-xenial 4.4.0.51.38
linux-image-powerpc-smp-lts-xenial 4.4.0.51.38
linux-image-powerpc64-emb-lts-xenial 4.4.0.51.38
linux-image-powerpc64-smp-lts-xenial 4.4.0.51.38
linux-image-virtual-lts-xenial 4.4.0.51.38

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:
http://www.ubuntu.com/usn/usn-3146-2
http://www.ubuntu.com/usn/usn-3146-1
CVE-2016-7097, CVE-2016-7425, CVE-2016-8658, CVE-2016-9644

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-51.72~14.04.1

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AutorTomislav Protega
Cert idNCERT-REF-2016-12-0002-ADV
CveCERT-CVE-DUMMY
ID izvornikaCERT-ORIGID-DUMMY
ProizvodCERT-DUMMY-PRODUCT
Izvorhttp://www.adobe.com/
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