Uploaded image for project: 'Lustre'
  1. Lustre
  2. LU-1511

Kernel update [RHEL5.8 2.6.18-308.11.1.el5]

Details

    • Improvement
    • Resolution: Fixed
    • Minor
    • Lustre 2.1.3, Lustre 1.8.9
    • None
    • None
    • 5160

    Description

      This update fixes the following security issues:

      • It was found that the Xen hypervisor implementation as shipped with Red
        Hat Enterprise Linux 5 did not properly restrict the syscall return
        addresses in the sysret return path to canonical addresses. An unprivileged
        user in a 64-bit para-virtualized guest, that is running on a 64-bit host
        that has an Intel CPU, could use this flaw to crash the host or,
        potentially, escalate their privileges, allowing them to execute arbitrary
        code at the hypervisor level. (CVE-2012-0217, Important)
      • It was found that guests could trigger a bug in earlier AMD CPUs, leading
        to a CPU hard lockup, when running on the Xen hypervisor implementation. An
        unprivileged user in a 64-bit para-virtualized guest could use this flaw to
        crash the host. Warning: After installing this update, hosts that are using
        an affected AMD CPU (refer to Red Hat Bugzilla bug #824966 for a list) will
        fail to boot. In order to boot such hosts, the new kernel parameter,
        allow_unsafe, can be used ("allow_unsafe=on"). This option should only be
        used with hosts that are running trusted guests, as setting it to "on"
        reintroduces the flaw (allowing guests to crash the host). (CVE-2012-2934,
        Moderate)

      Note: For Red Hat Enterprise Linux guests, only privileged guest users can
      exploit the CVE-2012-0217 and CVE-2012-2934 issues.

      Bugs fixed (http://bugzilla.redhat.com/):

      813428 - CVE-2012-0217 kernel: x86-64: avoid sysret to non-canonical address
      824966 - CVE-2012-2934 kernel: denial of service due to AMD Erratum #121

      Attachments

        Issue Links

          Activity

            [LU-1511] Kernel update [RHEL5.8 2.6.18-308.11.1.el5]
            pjones Peter Jones added a comment -

            This update landed for 2.1.3. Please create a new ticket to track any more current RHEL5.8 updates - thanks

            pjones Peter Jones added a comment - This update landed for 2.1.3. Please create a new ticket to track any more current RHEL5.8 updates - thanks
            ys Yang Sheng added a comment -

            This update fixes the following security issue:

            • A flaw was found in the way the Linux kernel's dl2k driver, used by
              certain D-Link Gigabit Ethernet adapters, restricted IOCTLs. A local,
              unprivileged user could use this flaw to issue potentially harmful IOCTLs,
              which could cause Ethernet adapters using the dl2k driver to malfunction
              (for example, losing network connectivity). (CVE-2012-2313, Low)

            Bugs fixed (http://bugzilla.redhat.com/):

            818820 - CVE-2012-2313 kernel: unfiltered netdev rio_ioctl access by users

            ys Yang Sheng added a comment - This update fixes the following security issue: A flaw was found in the way the Linux kernel's dl2k driver, used by certain D-Link Gigabit Ethernet adapters, restricted IOCTLs. A local, unprivileged user could use this flaw to issue potentially harmful IOCTLs, which could cause Ethernet adapters using the dl2k driver to malfunction (for example, losing network connectivity). (CVE-2012-2313, Low) Bugs fixed ( http://bugzilla.redhat.com/): 818820 - CVE-2012-2313 kernel: unfiltered netdev rio_ioctl access by users

            People

              ys Yang Sheng
              ys Yang Sheng
              Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: