Debian: DSA-3313-1: linux security update

    Date23 Jul 2015
    CategoryDebian
    49
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation or denial of service. CVE-2015-3290
    
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    Debian Security Advisory DSA-3313-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    July 23, 2015                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : linux
    CVE ID         : CVE-2015-3290 CVE-2015-3291 CVE-2015-4167 CVE-2015-5157
                     CVE-2015-5364 CVE-2015-5366
    
    Several vulnerabilities have been discovered in the Linux kernel that
    may lead to a privilege escalation or denial of service.
    
    CVE-2015-3290
    
        Andy Lutomirski discovered that the Linux kernel does not properly
        handle nested NMIs. A local, unprivileged user could use this flaw
        for privilege escalation.
    
    CVE-2015-3291
    
        Andy Lutomirski discovered that under certain conditions a malicious
        userspace program can cause the kernel to skip NMIs leading to a
        denial of service.
    
    CVE-2015-4167
    
        Carl Henrik Lunde discovered that the UDF implementation is missing
        a necessary length check. A local user that can mount devices could
        use this flaw to crash the system.
    
    CVE-2015-5157
    
        Petr Matousek and Andy Lutomirski discovered that an NMI that
        interrupts userspace and encounters an IRET fault is incorrectly
        handled. A local, unprivileged user could use this flaw for denial
        of service or possibly for privilege escalation.
    
    CVE-2015-5364
    
        It was discovered that the Linux kernel does not properly handle
        invalid UDP checksums. A remote attacker could exploit this flaw to
        cause a denial of service using a flood of UDP packets with invalid
        checksums.
    
    CVE-2015-5366
    
        It was discovered that the Linux kernel does not properly handle
        invalid UDP checksums. A remote attacker can cause a denial of
        service against applications that use epoll by injecting a single
        packet with an invalid checksum.
    
    For the stable distribution (jessie), these problems have been fixed in
    version 3.16.7-ckt11-1+deb8u2.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 4.0.8-2 or earlier versions.
    
    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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