RHEL 5 : kernel (RHSA-2011:0017)

Medium Nessus Plugin ID 51522

Synopsis

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

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 5. This is the sixth regular update.

The Red Hat Security Response Team has rated this update as having important 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 :

* A NULL pointer dereference flaw was found in the igb driver in the Linux kernel. If both the Single Root I/O Virtualization (SR-IOV) feature and promiscuous mode were enabled on an interface using igb, it could result in a denial of service when a tagged VLAN packet is received on that interface. (CVE-2010-4263, Important)

* A missing sanity check was found in vbd_create() in the Xen hypervisor implementation. As CD-ROM drives are not supported by the blkback back-end driver, attempting to use a virtual CD-ROM drive with blkback could trigger a denial of service (crash) on the host system running the Xen hypervisor. (CVE-2010-4238, Moderate)

* A flaw was found in the Linux kernel execve() system call implementation. A local, unprivileged user could cause large amounts of memory to be allocated but not visible to the OOM (Out of Memory) killer, triggering a denial of service. (CVE-2010-4243, Moderate)

* A flaw was found in fixup_page_fault() in the Xen hypervisor implementation. If a 64-bit para-virtualized guest accessed a certain area of memory, it could cause a denial of service on the host system running the Xen hypervisor. (CVE-2010-4255, Moderate)

* A missing initialization flaw was found in the bfa driver used by Brocade Fibre Channel Host Bus Adapters. A local, unprivileged user could use this flaw to cause a denial of service by reading a file in the '/sys/class/fc_host/host#/statistics/' directory. (CVE-2010-4343, Moderate)

* Missing initialization flaws in the Linux kernel could lead to information leaks. (CVE-2010-3296, CVE-2010-3877, CVE-2010-4072, CVE-2010-4073, CVE-2010-4075, CVE-2010-4080, CVE-2010-4081, CVE-2010-4158, Low)

Red Hat would like to thank Kosuke Tatsukawa for reporting CVE-2010-4263; Vladymyr Denysov for reporting CVE-2010-4238; Brad Spengler for reporting CVE-2010-4243; Dan Rosenberg for reporting CVE-2010-3296, CVE-2010-4073, CVE-2010-4075, CVE-2010-4080, CVE-2010-4081, and CVE-2010-4158; Vasiliy Kulikov for reporting CVE-2010-3877; and Kees Cook for reporting CVE-2010-4072.

These updated packages also include several hundred bug fixes for and enhancements to the Linux kernel. Space precludes documenting each of these changes in this advisory and users are directed to the Red Hat Enterprise Linux 5.6 Release Notes for information on the most significant of these changes :

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/ 5.6_Release_Notes/index.html

Refer to the kernel chapter in the Red Hat Enterprise Linux 5.6 Technical Notes for further information :

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/ 5.6_Technical_Notes/kernel.html

All Red Hat Enterprise Linux 5 users are advised to install these updated packages, which address these vulnerabilities as well as fixing the bugs and adding the enhancements noted in the Red Hat Enterprise Linux 5.6 Release Notes and Technical Notes. The system must be rebooted for this update to take effect.

Solution

Update the affected packages.

See Also

https://access.redhat.com/security/cve/cve-2010-3296

https://access.redhat.com/security/cve/cve-2010-3877

https://access.redhat.com/security/cve/cve-2010-4072

https://access.redhat.com/security/cve/cve-2010-4073

https://access.redhat.com/security/cve/cve-2010-4075

https://access.redhat.com/security/cve/cve-2010-4080

https://access.redhat.com/security/cve/cve-2010-4081

https://access.redhat.com/security/cve/cve-2010-4158

https://access.redhat.com/security/cve/cve-2010-4238

https://access.redhat.com/security/cve/cve-2010-4243

https://access.redhat.com/security/cve/cve-2010-4255

https://access.redhat.com/security/cve/cve-2010-4263

https://access.redhat.com/security/cve/cve-2010-4343

http://www.nessus.org/u?056c0c27

https://access.redhat.com/errata/RHSA-2011:0017

Plugin Details

Severity: Medium

ID: 51522

File Name: redhat-RHSA-2011-0017.nasl

Version: 1.19

Type: local

Agent: unix

Published: 2011/01/14

Updated: 2019/03/26

Dependencies: 122878, 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.1

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-PAE, p-cpe:/a:redhat:enterprise_linux:kernel-PAE-devel, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-doc, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-xen, p-cpe:/a:redhat:enterprise_linux:kernel-xen-devel, cpe:/o:redhat:enterprise_linux:5

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2011/01/13

Vulnerability Publication Date: 2010/09/30

Reference Information

CVE: CVE-2010-3296, CVE-2010-3877, CVE-2010-4072, CVE-2010-4073, CVE-2010-4075, CVE-2010-4080, CVE-2010-4081, CVE-2010-4158, CVE-2010-4238, CVE-2010-4243, CVE-2010-4255, CVE-2010-4263, CVE-2010-4343

BID: 43221, 43806, 44630, 44758, 45004, 45054, 45058, 45063, 45073, 45099, 45208, 45262

RHSA: 2011:0017