Oracle Linux 6 : kernel (ELSA-2011-0928)

Medium Nessus Plugin ID 68305


The remote Oracle Linux host is missing one or more security updates.


From Red Hat Security Advisory 2011:0928 :

Updated kernel packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

This update fixes the following security issues :

* It was found that the receive hook in the ipip_init() function in the ipip module, and in the ipgre_init() function in the ip_gre module, could be called before network namespaces setup is complete.
If packets were received at the time the ipip or ip_gre module was still being loaded into the kernel, it could cause a denial of service. (CVE-2011-1767, CVE-2011-1768, Moderate)

* It was found that an mmap() call with the MAP_PRIVATE flag on '/dev/zero' would create transparent hugepages and trigger a certain robustness check. A local, unprivileged user could use this flaw to cause a denial of service. (CVE-2011-2479, Moderate)

This update also fixes various bugs. Documentation for these bug fixes will be available shortly from the Technical Notes document linked to in the References section.

Users should upgrade to these updated packages, which contain backported patches to resolve these issues, and fix the bugs noted in the Technical Notes. The system must be rebooted for this update to take effect.


Update the affected kernel packages.

See Also

Plugin Details

Severity: Medium

ID: 68305

File Name: oraclelinux_ELSA-2011-0928.nasl

Version: $Revision: 1.4 $

Type: local

Agent: unix

Published: 2013/07/12

Modified: 2015/12/01

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5.4

Temporal Score: 4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel, p-cpe:/a:oracle:linux:kernel-debug, p-cpe:/a:oracle:linux:kernel-debug-devel, p-cpe:/a:oracle:linux:kernel-devel, p-cpe:/a:oracle:linux:kernel-doc, p-cpe:/a:oracle:linux:kernel-firmware, p-cpe:/a:oracle:linux:kernel-headers, cpe:/o:oracle:linux:6

Required KB Items: Host/local_checks_enabled, Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2011/07/14

Reference Information

CVE: CVE-2011-1767, CVE-2011-1768, CVE-2011-2479

BID: 47852, 47853, 48347

RHSA: 2011:0928