RHEL 6 : kernel (RHSA-2017:1715)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for kernel is now available for Red Hat Enterprise Linux 6.4
Advanced Update Support.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

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

Security Fix(es) :

* The NFSv2 and NFSv3 server implementations in the Linux kernel
through 4.10.13 lacked certain checks for the end of a buffer. A
remote attacker could trigger a pointer-arithmetic error or possibly
cause other unspecified impacts using crafted requests related to
fs/nfsd/nfs3xdr.c and fs/nfsd/nfsxdr.c. (CVE-2017-7895, Important)

Red Hat would like to thank Ari Kauppi for reporting this issue.

Bug Fix(es) :

* When upgrading to kernel with the fix for stack guard flaw, a crash
could occur in Java Virtual Machine (JVM) environments, which
attempted to implement their own stack guard page. With this update,
the underlying source code has been fixed to consider the PROT_NONE
mapping as a part of the stack, and the crash in JVM no longer occurs
under the described circumstances. (BZ#1466815)

See also :

https://www.redhat.com/security/data/cve/CVE-2017-7895.html
http://rhn.redhat.com/errata/RHSA-2017-1715.html

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Red Hat Local Security Checks

Nessus Plugin ID: 101384 ()

Bugtraq ID:

CVE ID: CVE-2017-7895

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