RHEL 7 : kernel (RHSA-2016:0064)

This script is Copyright (C) 2016-2017 Tenable Network Security, Inc.


Synopsis :

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

Description :

Updated kernel packages that fix one security issue are now available
for Red Hat Enterprise Linux 7.

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

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

* A use-after-free flaw was found in the way the Linux kernel's key
management subsystem handled keyring object reference counting in
certain error path of the join_session_keyring() function. A local,
unprivileged user could use this flaw to escalate their privileges on
the system. (CVE-2016-0728, Important)

Red Hat would like to thank the Perception Point research team for
reporting this issue.

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

See also :

https://www.redhat.com/security/data/cve/CVE-2016-0728.html
http://rhn.redhat.com/errata/RHSA-2016-0064.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.0
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 88173 ()

Bugtraq ID:

CVE ID: CVE-2016-0728

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