bugtraq - [SECURITY] [DSA 2992-1] linux security update

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Date: Tue, 29 Jul 2014 06:42:00 +0000
From: Salvatore Bonaccorso <carnil@...ian.org>
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 2992-1] linux security update

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Debian Security Advisory DSA-2992-1                   security@...ian.org
http://www.debian.org/security/                      Salvatore Bonaccorso
July 29, 2014                          http://www.debian.org/security/faq
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Package        : linux
CVE ID         : CVE-2014-3534 CVE-2014-4667 CVE-2014-4943
Debian Bug     : 728705

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a denial of service or privilege escalation:

CVE-2014-3534

    Martin Schwidefsky of IBM discovered that the ptrace subsystem does
    not properly sanitize the psw mask value. On s390 systems, an
    unprivileged local user could use this flaw to set address space
    control bits to kernel space combination and thus gain read/write
    access to kernel memory.

CVE-2014-4667

    Gopal Reddy Kodudula of Nokia Siemens Networks discovered that the
    sctp_association_free function does not properly manage a certain
    backlog value, which allows remote attackers to cause a denial of
    service (socket outage) via a crafted SCTP packet.

CVE-2014-4943

    Sasha Levin discovered a flaw in the Linux kernel's point-to-point
    protocol (PPP) when used with the Layer Two Tunneling Protocol
    (L2TP). An unprivileged local user could use this flaw for privilege
    escalation.

For the stable distribution (wheezy), these problems have been fixed in
version 3.2.60-1+deb7u3.

For the unstable distribution (sid), these problems have been fixed in
version 3.14.13-2.

We recommend that you upgrade your linux packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/

Mailing list: debian-security-announce@...ts.debian.org
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