Login
Newsletter
Werbung

Sicherheit: Mehrere Probleme in Linux
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in Linux
ID: USN-2849-1
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 LTS
Datum: So, 20. Dezember 2015, 16:36
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8551
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8550
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8552
Applikationen: Linux

Originalnachricht

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--===============1836281988774758463==
Content-Type: multipart/signed; micalg=pgp-sha512;
protocol="application/pgp-signature";
boundary="mvPmbIN9WdV65022BeFEJ3VAKxrR7I8TK"

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
--mvPmbIN9WdV65022BeFEJ3VAKxrR7I8TK
Content-Type: text/plain; charset=utf-
Content-Transfer-Encoding: quoted-printable

==========================================================================
Ubuntu Security Notice USN-2849-1
December 19, 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:

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)

Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not
perform sanity checks on the device's state. An attacker could exploit this
flaw to cause a denial of service (NULL dereference) on the host.
(CVE-2015-8551)

Konrad Rzeszutek Wilk discovered the Xen PCI backend driver does not
perform sanity checks on the device's state. An attacker could exploit this
flaw to cause a denial of service by flooding the logging system with
WARN() messages causing the initial domain to exhaust disk space.
(CVE-2015-8552)

Jann Horn discovered a ptrace issue with user namespaces in the Linux
kernel. The namespace owner could potentially exploit this flaw by ptracing
a root owned process entering the user namespace to elevate its privileges
and potentially gain access outside of the namespace.
(http://bugs.launchpad.net/bugs/1527374)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.16.0-57-generic 3.16.0-57.77~14.04.1
linux-image-3.16.0-57-generic-lpae 3.16.0-57.77~14.04.1
linux-image-3.16.0-57-lowlatency 3.16.0-57.77~14.04.1
linux-image-3.16.0-57-powerpc-e500mc 3.16.0-57.77~14.04.1
linux-image-3.16.0-57-powerpc-smp 3.16.0-57.77~14.04.1
linux-image-3.16.0-57-powerpc64-emb 3.16.0-57.77~14.04.1
linux-image-3.16.0-57-powerpc64-smp 3.16.0-57.77~14.04.1

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-2849-1
CVE-2015-8550, CVE-2015-8551, CVE-2015-8552, 1527374

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-57.77~14.04.1



--mvPmbIN9WdV65022BeFEJ3VAKxrR7I8TK
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
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=4Q5c
-----END PGP SIGNATURE-----

--mvPmbIN9WdV65022BeFEJ3VAKxrR7I8TK--


--===============1836281988774758463==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
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

--===============1836281988774758463==--
Pro-Linux
Traut euch!
Neue Nachrichten
Werbung