The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:1643 advisory.

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

    * It was found that the Linux kernel's ping socket implementation did not     properly handle socket unhashing during spurious disconnects, which could     lead to a use-after-free flaw. On x86-64 architecture systems, a local user     able to create ping sockets could use this flaw to crash the system.
    On non-x86-64 architecture systems, a local user able to create ping     sockets could use this flaw to escalate their privileges on the system.
    (CVE-2015-3636, Moderate)

    This update also fixes the following bugs:

    * Due to bad memory or memory corruption, an isolated BUG_ON(mm->nr_ptes)     was sometimes reported, indicating that not all the page tables allocated     could be found and freed when the exit_mmap() function cleared the user     address space. As a consequence, a kernel panic occurred. To fix this bug,     the BUG_ON() function has been replaced by WARN_ON(), which prevents the     kernel from panicking in the aforementioned situation. (BZ#1235929)

    * Previously, it was for the ext4 driver to read a metadata block and use     it without a verification. If the metadata block was corrupted, a kernel     panic could occur. With this update, verification is forced on every buffer     before it is used, which uncovers possible corruption and prevents further     use of the corrupted metadata buffer. (BZ#1242930)

    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 this issue but has instead relied only on the application's self-reported version number.

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RHEL 6 : kernel (RHSA-2015:1643)

medium Nessus Plugin ID 85531

Version 2.13