The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2014:1843 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux     operating system.

    * A race condition flaw was found in the way the Linux kernel's KVM     subsystem handled PIT (Programmable Interval Timer) emulation. A guest user     who has access to the PIT I/O ports could use this flaw to crash the host.
    (CVE-2014-3611, Important)

    * A memory corruption flaw was found in the way the USB ConnectTech     WhiteHEAT serial driver processed completion commands sent via USB Request     Blocks buffers. An attacker with physical access to the system could use     this flaw to crash the system or, potentially, escalate their privileges on     the system. (CVE-2014-3185, Moderate)

    * It was found that the Linux kernel's KVM subsystem did not handle the VM     exits gracefully for the invept (Invalidate Translations Derived from EPT)     and invvpid (Invalidate Translations Based on VPID) instructions. On hosts     with an Intel processor and invept/invppid VM exit support, an unprivileged     guest user could use these instructions to crash the guest. (CVE-2014-3645,     CVE-2014-3646, Moderate)

    Red Hat would like to thank Lars Bull of Google for reporting     CVE-2014-3611, and the Advanced Threat Research team at Intel Security for     reporting CVE-2014-3645 and CVE-2014-3646.

    This update also fixes the following bugs:

    * This update fixes several race conditions between PCI error recovery     callbacks and potential calls of the ifup and ifdown commands in the tg3     driver. When triggered, these race conditions could cause a kernel crash.
    (BZ#1142570)

    * Previously, GFS2 failed to unmount a sub-mounted GFS2 file system if its     parent was also a GFS2 file system. This problem has been fixed by adding     the appropriate d_op->d_hash() routine call for the last component of the     mount point path in the path name lookup mechanism code (namei).
    (BZ#1145193)

    * Due to previous changes in the virtio-net driver, a Red Hat Enterprise     Linux 6.6 guest was unable to boot with the mgr_rxbuf=off option     specified. This was caused by providing the page_to_skb() function with an     incorrect packet length in the driver's Rx path. This problem has been     fixed and the guest in the described scenario can now boot successfully.
    (BZ#1148693)

    * When using one of the newer IPSec Authentication Header (AH) algorithms     with Openswan, a kernel panic could occur. This happened because the     maximum truncated ICV length was too small. To fix this problem, the     MAX_AH_AUTH_LEN parameter has been set to 64. (BZ#1149083)

    * A bug in the IPMI driver caused the kernel to panic when an IPMI     interface was removed using the hotmod script. The IPMI driver has been     fixed to properly clean the relevant data when removing an IPMI interface.
    (BZ#1149578)

    * Due to a bug in the IPMI driver, the kernel could panic when adding an     IPMI interface that was previously removed using the hotmod script.
    This update fixes this bug by ensuring that the relevant shadow structure     is initialized at the right time. (BZ#1149580)

    All kernel users are advised to upgrade to these updated packages, which     contain backported patches to correct these issues. The system must be     rebooted for this update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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RHEL 6 : kernel (RHSA-2014:1843)

medium Nessus Plugin ID 79206

Version 1.24