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Sicherheit: Mehrere Probleme in Linux
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in Linux
ID: USN-2888-1
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 LTS
Datum: Di, 2. Februar 2016, 08:11
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8569
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7550
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8374
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7513
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7446
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8575
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7990
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8543

Originalnachricht


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==========================================================================
Ubuntu Security Notice USN-2888-1
February 02, 2016

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:

It was discovered that a use-after-free vulnerability existed in the
AF_UNIX implementation in the Linux kernel. A local attacker could use
crafted epoll_ctl calls to cause a denial of service (system crash) or
expose sensitive information. (CVE-2013-7446)

It was discovered that the KVM implementation in the Linux kernel did not
properly restore the values of the Programmable Interrupt Timer (PIT). A
user-assisted attacker in a KVM guest could cause a denial of service in
the host (system crash). (CVE-2015-7513)

It was discovered that the Linux kernel keyring subsystem contained a race
between read and revoke operations. A local attacker could use this to
cause a denial of service (system crash). (CVE-2015-7550)

Sasha Levin discovered that the Reliable Datagram Sockets (RDS)
implementation in the Linux kernel had a race condition when checking
whether a socket was bound or not. A local attacker could use this to cause
a denial of service (system crash). (CVE-2015-7990)

It was discovered that the Btrfs implementation in the Linux kernel
incorrectly handled compressed inline extants on truncation. A local
attacker could use this to expose sensitive information. (CVE-2015-8374)

郭氞刚 discovered that the Linux kernel networking implementation did
not validate protocol identifiers for certain protocol families, A local
attacker could use this to cause a denial of service (system crash) or
possibly gain administrative privileges. (CVE-2015-8543)

Dmitry Vyukov discovered that the pptp implementation in the Linux kernel
did not verify an address length when setting up a socket. A local attacker
could use this to craft an application that exposed sensitive information
from kernel memory. (CVE-2015-8569)

David Miller discovered that the Bluetooth implementation in the Linux
kernel did not properly validate the socket address length for Synchronous
Connection-Oriented (SCO) sockets. A local attacker could use this to
expose sensitive information. (CVE-2015-8575)

Update instructions:

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

Ubuntu 14.04 LTS:
linux-image-3.16.0-60-generic 3.16.0-60.80~14.04.1
linux-image-3.16.0-60-generic-lpae 3.16.0-60.80~14.04.1
linux-image-3.16.0-60-lowlatency 3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc-e500mc 3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc-smp 3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc64-emb 3.16.0-60.80~14.04.1
linux-image-3.16.0-60-powerpc64-smp 3.16.0-60.80~14.04.1

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-2888-1
CVE-2013-7446, CVE-2015-7513, CVE-2015-7550, CVE-2015-7990,
CVE-2015-8374, CVE-2015-8543, CVE-2015-8569, CVE-2015-8575

Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-utopic/3.16.0-60.80~14.04.1


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