The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2014:1724 advisory.

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

    Security fixes:

    * 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 NULL pointer dereference flaw was found in the way the Linux kernel's     Stream Control Transmission Protocol (SCTP) implementation handled     simultaneous connections between the same hosts. A remote attacker could     use this flaw to crash the system. (CVE-2014-5077, Important)

    * 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)

    * A use-after-free flaw was found in the way the Linux kernel's Advanced     Linux Sound Architecture (ALSA) implementation handled user controls. A     local, privileged user could use this flaw to crash the system.
    (CVE-2014-4653, 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.

    Bug fixes:

    * A known issue that could prevent Chelsio adapters using the cxgb4 driver     from being initialized on IBM POWER8 systems has been fixed. These     adapters can now be used on IBM POWER8 systems as expected. (BZ#1130548)

    * When bringing a hot-added CPU online, the kernel did not initialize a     CPU mask properly, which could result in a kernel panic. This update     corrects the bug by ensuring that the CPU mask is properly initialized and     the correct NUMA node selected. (BZ#1134715)

    * The kernel could fail to bring a CPU online if the hardware supported     both, the acpi-cpufreq and intel_pstate modules. This update ensures that     the acpi-cpufreq module is not loaded in the intel_pstate module is     loaded. (BZ#1134716)

    * Due to a bug in the time accounting of the kernel scheduler, a divide     error could occur when hot adding a CPU. To fix this problem, the kernel     scheduler time accounting has been reworked. (BZ#1134717)

    * The kernel did not handle exceptions caused by an invalid floating point     control (FPC) register, resulting in a kernel oops. This problem has been     fixed by placing the label to handle these exceptions to the correct place     in the code. (BZ#1138733)

    * A previous change to the kernel for the PowerPC architecture changed     implementation of the compat_sys_sendfile() function. Consequently, the     64-bit sendfile() system call stopped working for files larger than 2 GB     on PowerPC. This update restores previous behavior of sendfile() on     PowerPC, and it again process files bigger than 2 GB as expected.
    (BZ#1139126)

    * Previously, the kernel scheduler could schedule a CPU topology update     even though the topology did not change. This could negatively affect the     CPU load balancing, cause degradation of the system performance, and     eventually result in a kernel oops. This problem has been fixed by     skipping the CPU topology update if the topology has not actually changed.
    (BZ#1140300)

    * Previously, recovery of a double-degraded RAID6 array could, under     certain circumstances, result in data corruption. This could happen     because the md driver was using an optimization that is safe to use only     for single-degraded arrays. This update ensures that this optimization is     skipped during the recovery of double-degraded RAID6 arrays. (BZ#1143850)

    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.

Detections

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RHEL 7 : kernel (RHSA-2014:1724)

medium Nessus Plugin ID 78722

Version 1.22