--===============4486790466071880420==
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature";
 boundary="idY8LE8SD6/8DnRI"
Content-Disposition: inline


--idY8LE8SD6/8DnRI
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

==========================================================================
Ubuntu Security Notice USN-3641-2
May 08, 2018

linux, linux-lts-trusty vulnerabilities
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-lts-trusty: Linux hardware enablement kernel from Trusty for Precise
 ESM

Details:

USN-3641-1 fixed vulnerabilities in the Linux kernel for Ubuntu 14.04
LTS, Ubuntu 16.04 LTS, and Ubuntu 17.10.  This update provides the
corresponding updates for Ubuntu 12.04 ESM.

Nick Peterson discovered that the Linux kernel did not properly handle
debug exceptions following a MOV/POP to SS instruction. A local attacker
could use this to cause a denial of service (system crash). This issue only
affected the amd64 architecture. (CVE-2018-8897)

Andy Lutomirski discovered that the KVM subsystem of the Linux kernel did
not properly emulate the ICEBP instruction following a MOV/POP to SS
instruction. A local attacker in a KVM virtual machine could use this to
cause a denial of service (guest VM crash) or possibly escalate privileges
inside of the virtual machine. This issue only affected the i386 and amd64
architectures. (CVE-2018-1087)

Andy Lutomirski discovered that the Linux kernel did not properly perform
error handling on virtualized debug registers. A local attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2018-1000199)

Update instructions:

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

Ubuntu 12.04 ESM:
  linux-image-3.13.0-147-generic  3.13.0-147.196~precise1
  linux-image-3.13.0-147-generic-lpae  3.13.0-147.196~precise1
  linux-image-3.2.0-134-generic   3.2.0-134.180
  linux-image-3.2.0-134-generic-pae  3.2.0-134.180
  linux-image-3.2.0-134-highbank  3.2.0-134.180
  linux-image-3.2.0-134-omap      3.2.0-134.180
  linux-image-3.2.0-134-powerpc-smp  3.2.0-134.180
  linux-image-3.2.0-134-powerpc64-smp  3.2.0-134.180
  linux-image-3.2.0-134-virtual   3.2.0-134.180
  linux-image-generic             3.2.0.134.149
  linux-image-generic-lpae-lts-trusty  3.13.0.147.138
  linux-image-generic-lts-trusty  3.13.0.147.138
  linux-image-generic-pae         3.2.0.134.149
  linux-image-highbank            3.2.0.134.149
  linux-image-omap                3.2.0.134.149
  linux-image-powerpc             3.2.0.134.149
  linux-image-powerpc-smp         3.2.0.134.149
  linux-image-powerpc64-smp       3.2.0.134.149

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:
  https://usn.ubuntu.com/usn/usn-3641-2
  https://usn.ubuntu.com/usn/usn-3641-1
  CVE-2018-1000199, CVE-2018-1087, CVE-2018-8897


--idY8LE8SD6/8DnRI
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=3ag8
-----END PGP SIGNATURE-----

--idY8LE8SD6/8DnRI--


--===============4486790466071880420==
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: inline

-- 
ubuntu-security-announce mailing list
ubuntu-security-announce@lists.ubuntu.com
Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce