The remote Redhat Enterprise Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:2124 advisory.

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

    Security Fix(es):

    * A race condition was found in the way the Linux kernel's memory subsystem handled the copy-on-write     (COW) breakage of private read-only memory mappings. An unprivileged, local user could use this flaw to     gain write access to otherwise read-only memory mappings and thus increase their privileges on the system.
    (CVE-2016-5195, Important)

    * It was found that stacking a file system over procfs in the Linux kernel could lead to a kernel stack     overflow due to deep nesting, as demonstrated by mounting ecryptfs over procfs and creating a recursion by     mapping /proc/environ. An unprivileged, local user could potentially use this flaw to escalate their     privileges on the system. (CVE-2016-1583, Important)

    Red Hat would like to thank Phil Oester for reporting CVE-2016-5195.

    Bug Fix(es):

    * In some cases, a kernel crash or file system corruption occurred when running journal mode 'ordered'.
    The kernel crash was caused by a null pointer dereference due to a race condition between two journal     functions. The file system corruption occurred due to a race condition between the do_get_write_access()     function and buffer writeout. This update fixes both race conditions. As a result, neither the kernel     crash, nor the file system corruption now occur. (BZ#1067708)

    * Prior to this update, some Global File System 2 (GFS2) files had incorrect time stamp values due to two     problems with handling time stamps of such files. The first problem concerned the atime time stamp, which     ended up with an arbitrary value ahead of the actual value, when a GFS2 file was accessed. The second     problem was related to the mtime and ctime time stamp updates, which got lost when a GFS2 file was written     to from one node and read from or written to from another node. With this update, a set of patches has     been applied that fix these problems. As a result, the time stamps of GFS2 files are now handled     correctly. (BZ#1374861)

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

Analytics

RHEL 5 : kernel (RHSA-2016:2124)

high Nessus Plugin ID 94431

Version 2.17