bugtraq - [SECURITY] [DSA 3093-1] linux security update

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Message-Id: <E1Xy5YR-0007EE-Rc@master.debian.org>
Date: Mon, 08 Dec 2014 21:09:15 +0000
From: Salvatore Bonaccorso <carnil@...ian.org>
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 3093-1] linux security update

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Debian Security Advisory DSA-3093-1                   security@...ian.org
http://www.debian.org/security/                      Salvatore Bonaccorso
December 08, 2014                      http://www.debian.org/security/faq
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Package        : linux
CVE ID         : CVE-2014-7841 CVE-2014-8369 CVE-2014-8884 CVE-2014-9090

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

CVE-2014-7841

    Liu Wei of Red Hat discovered that a SCTP server doing ASCONF will
    panic on malformed INIT chunks by triggering a NULL pointer
    dereference.

CVE-2014-8369

    A flaw was discovered in the way iommu mapping failures were handled
    in the kvm_iommu_map_pages() function in the Linux kernel. A guest
    OS user could exploit this flaw to cause a denial of service (host
    OS memory corruption) or possibly have other unspecified impact on
    the host OS.

CVE-2014-8884

    A stack-based buffer overflow flaw was discovered in the
    TechnoTrend/Hauppauge DEC USB driver. A local user with write access
    to the corresponding device could use this flaw to crash the kernel
    or, potentially, elevate their privileges.

CVE-2014-9090

    Andy Lutomirski discovered that the do_double_fault function in
    arch/x86/kernel/traps.c in the Linux kernel did not properly handle
    faults associated with the Stack Segment (SS) segment register,
    which allows local users to cause a denial of service (panic).

For the stable distribution (wheezy), these problems have been fixed in
version 3.2.63-2+deb7u2. This update also includes fixes for regressions
introduced by previous updates.

For the unstable distribution (sid), these problems will be fixed soon
in version 3.16.7-ckt2-1.

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: https://www.debian.org/security/

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