RHSA-2011-1530: kernel

NASLDB: RHSA-2011-1530: kernel

General

ID: 57012
Name: RHSA-2011-1530: kernel

Summary: Check for the version of the kernel packages

Credits: Tenable Network Security, Inc.

Classification

Risk: –

CVSS: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
CVSS Base Vector: –
CVSS Temporal Vector: –

Port: 0
Family: Red Hat Local Security Checks
Type: Local

Description

Updated kernel packages that fix multiple security issues, address several
hundred bugs and add numerous enhancements are now available as part of the
ongoing support and maintenance of Red Hat Enterprise Linux version 6. This
is the second regular update.

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:

The proc file system could allow a local, unprivileged user to obtain

sensitive information or possibly cause integrity issues. (CVE-2011-1020,
Moderate)

Non-member VLAN (virtual LAN) packet handling for interfaces in

promiscuous mode and also using the be2net driver could allow an attacker
on the local network to cause a denial of service. (CVE-2011-3347,
Moderate)

A flaw was found in the Linux kernel in the way splitting two extents in

ext4_ext_convert_to_initialized() worked. A local, unprivileged user with
access to mount and unmount ext4 file systems could use this flaw to cause
a denial of service. (CVE-2011-3638, Moderate)

A NULL pointer dereference flaw was found in the way the Linux kernel\‘s

key management facility handled user-defined key types. A local,
unprivileged user could use the keyctl utility to cause a denial of
service. (CVE-2011-4110, Moderate)

Red Hat would like to thank Kees Cook for reporting CVE-2011-1020; Somnath
Kotur for reporting CVE-2011-3347; and Zheng Liu for reporting
CVE-2011-3638.

This update also fixes several hundred bugs and adds enhancements. Refer to
the Red Hat Enterprise Linux 6.2 Release Notes for information on the most
significant of these changes, and the Technical Notes for further
information, both linked to in the References.

All Red Hat Enterprise Linux 6 users are advised to install these updated
packages, which correct these issues, and fix the bugs and add the
enhancements noted in the Red Hat Enterprise Linux 6.2 Release Notes and
Technical Notes. The system must be rebooted for this update to take
effect.