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AUSCERT External Security Bulletin Redistribution
ESB-2017.2076
Kernel Live Patch Security Notice LSN-0028-1
18 August 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Linux kernel
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-1000112 CVE-2017-1000111
Reference: ESB-2017.2019
ESB-2017.2006
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==========================================================================
Kernel Live Patch Security Notice LSN-0028-1
August 15, 2017
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 |
| Ubuntu 14.04 LTS | 4.4.0 | amd64 | generic |
| Ubuntu 14.04 LTS | 4.4.0 | amd64 | lowlatency |
Summary:
Several security issues were fixed in the kernel.
Software Description:
- - linux: Linux kernel
Details:
Andrey Konovalov discovered a race condition in the UDP Fragmentation
Offload (UFO) code in the Linux kernel. A local attacker could use this to
cause a denial of service or execute arbitrary code. (CVE-2017-1000112)
Andrey Konovalov discovered a race condition in AF_PACKET socket option
handling code in the Linux kernel. A local unprivileged attacker could use
this to cause a denial of service or possibly execute arbitrary code.
(CVE-2017-1000111)
Update instructions:
The problem can be corrected by updating your livepatches to the following
versions:
| Kernel | Version | flavors |
|-----------------+----------+--------------------------|
| 4.4.0-21.37 | 28.2 | generic, lowlatency |
| 4.4.0-22.39 | 28.2 | generic, lowlatency |
| 4.4.0-22.40 | 28.2 | generic, lowlatency |
| 4.4.0-24.43 | 28.2 | generic, lowlatency |
| 4.4.0-28.47 | 28.2 | generic, lowlatency |
| 4.4.0-31.50 | 28.2 | generic, lowlatency |
| 4.4.0-34.53 | 28.2 | generic, lowlatency |
| 4.4.0-36.55 | 28.2 | generic, lowlatency |
| 4.4.0-38.57 | 28.2 | generic, lowlatency |
| 4.4.0-42.62 | 28.2 | generic, lowlatency |
| 4.4.0-43.63 | 28.2 | generic, lowlatency |
| 4.4.0-45.66 | 28.2 | generic, lowlatency |
| 4.4.0-47.68 | 28.2 | generic, lowlatency |
| 4.4.0-51.72 | 28.2 | generic, lowlatency |
| 4.4.0-53.74 | 28.2 | generic, lowlatency |
| 4.4.0-57.78 | 28.2 | generic, lowlatency |
| 4.4.0-59.80 | 28.2 | generic, lowlatency |
| 4.4.0-62.83 | 28.2 | generic, lowlatency |
| 4.4.0-63.84 | 28.2 | generic, lowlatency |
| 4.4.0-64.85 | 28.2 | generic, lowlatency |
| 4.4.0-66.87 | 28.2 | generic, lowlatency |
| 4.4.0-67.88 | 28.2 | generic, lowlatency |
| 4.4.0-70.91 | 28.2 | generic, lowlatency |
| 4.4.0-71.92 | 28.2 | generic, lowlatency |
| 4.4.0-72.93 | 28.2 | generic, lowlatency |
| 4.4.0-75.96 | 28.2 | generic, lowlatency |
| 4.4.0-77.98 | 28.2 | generic, lowlatency |
| 4.4.0-78.99 | 28.2 | generic, lowlatency |
| 4.4.0-79.100 | 28.2 | generic, lowlatency |
| 4.4.0-81.104 | 28.2 | generic, lowlatency |
| 4.4.0-83.106 | 28.2 | generic, lowlatency |
| 4.4.0-87.110 | 28.2 | generic, lowlatency |
| 4.4.0-89.112 | 28.2 | generic, lowlatency |
| lts-4.4.0-21.37_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-22.39_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-22.40_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-24.43_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-28.47_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-31.50_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-34.53_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-36.55_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-38.57_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-42.62_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-45.66_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-47.68_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-51.72_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-53.74_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-57.78_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-59.80_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-62.83_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-63.84_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency |
| lts-4.4.0-64.85_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-66.87_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-70.91_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-71.92_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-72.93_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-75.96_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-78.99_14.04.2-lts-xenial | 14.04.2 | generic, lowlatency |
| lts-4.4.0-79.100_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-81.104_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
| lts-4.4.0-87.110_14.04.1-lts-xenial | 14.04.1 | generic, lowlatency |
Additionally, you should install an updated kernel with these fixes and
reboot at your convienience.
References:
CVE-2017-1000111, CVE-2017-1000112
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===========================================================================
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