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Red Hat: RHSA-2013:1051-1 Moderate: Kernel Security Update

red hat
Calendar Grey July 16, 2013
Scroller Redhat Esm H88
The advisory from Red Hat details a significant update aimed at mitigating potential security flaws within the kernel, essential for safeguarding overall system stability.
Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/site/articles/11258

To install kernel packages manually, use "rpm -ivh [package]". Do not use "rpm -Uvh" as that will remove the running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system.

Summary

The kernel packages contain the Linux kernel, the core of any Linux operating system.
This update fixes the following security issues:
* A flaw was found in the tcp_read_sock() function in the Linux kernel's IPv4 TCP/IP protocol suite implementation in the way socket buffers (skb) were handled. A local, unprivileged user could trigger this issue via a call to splice(), leading to a denial of service. (CVE-2013-2128, Moderate)
* Information leak flaws in the Linux kernel could allow a local, unprivileged user to leak kernel memory to user-space. (CVE-2012-6548, CVE-2013-2634, CVE-2013-2635, CVE-2013-3222, CVE-2013-3224, CVE-2013-3225, Low)
* An information leak was found in the Linux kernel's POSIX signals implementation. A local, unprivileged user could use this flaw to bypass the Address Space Layout Randomization (ASLR) security feature. (CVE-2013-0914, Low)
* A format string flaw was found in the ext3_msg() function in the Linux kernel's ext3 file system implementation. A local user who is able to mount an ext3 file system could use this flaw to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-1848, Low)
* A format string flaw was found in the b43_do_request_fw() function in the Linux kernel's b43 driver implementation. A local user who is able to specify the "fwpostfix" b43 module parameter could use this flaw to cause a denial of service or, potentially, escalate their privileges. (CVE-2013-2852, Low)
* A NULL pointer dereference flaw was found in the Linux kernel's ftrace and function tracer implementations. A local user who has the CAP_SYS_ADMIN capability could use this flaw to cause a denial of service. (CVE-2013-3301, Low)
Red Hat would like to thank Kees Cook for reporting CVE-2013-2852.
This update also fixes several bugs. Documentation for these changes 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 correct these issues. The system must be rebooted for this update to take effect.

Topics%20covered

Topics Covered

security advisory denial of service information leak red hat bug fix kernel patch moderate severity

References

https://access.redhat.com/security/cve/CVE-2012-6548 https://access.redhat.com/security/cve/CVE-2013-0914 https://access.redhat.com/security/cve/CVE-2013-1848 https://access.redhat.com/security/cve/CVE-2013-2128 https://access.redhat.com/security/cve/CVE-2013-2634 https://access.redhat.com/security/cve/CVE-2013-2635 https://access.redhat.com/security/cve/CVE-2013-2852 https://access.redhat.com/security/cve/CVE-2013-3222 https://access.redhat.com/security/cve/CVE-2013-3224 https://access.redhat.com/security/cve/CVE-2013-3225 https://access.redhat.com/security/cve/CVE-2013-3301 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.4_Technical_Notes/kernel.html

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: kernel-2.6.32-358.14.1.el6.i686.rpm kernel-debug-2.6.32-358.14.1.el6.i686.rpm kernel-debug-debuginfo-2.6.32-358.14.1.el6.i686.rpm kernel-debug-devel-2.6.32-358.14.1.el6.i686.rpm kernel-debuginfo-2.6.32-358.14.1.el6.i686.rpm kernel-debuginfo-common-i686-2.6.32-358.14.1.el6.i686.rpm kernel-devel-2.6.32-358.14.1.el6.i686.rpm kernel-headers-2.6.32-358.14.1.el6.i686.rpm perf-2.6.32-358.14.1.el6.i686.rpm perf-debuginfo-2.6.32-358.14.1.el6.i686.rpm python-perf-debuginfo-2.6.32-358.14.1.el6.i686.rpm
noarch: kernel-doc-2.6.32-358.14.1.el6.noarch.rpm kernel-firmware-2.6.32-358.14.1.el6.noarch.rpm
x86_64: kernel-2.6.32-358.14.1.el6.x86_64.rpm kernel-debug-2.6.32-358.14.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-358.14.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-358.14.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.14.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.14.1.el6.x86_64.rpm kernel-devel-2.6.32-358.14.1.el6.x86_64.rpm kernel-headers-2.6.32-358.14.1.el6.x86_64.rpm perf-2.6.32-358.14.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.14.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.14.1.el6.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
i386:

Read the Full Advisory


Advisory ID: RHSA-2013:1051-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2013:1051.html
Issue date: 2013-07-16

Topic

Updated kernel packages that fix multiple security issues and several bugsare now available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory denial of service information leak red hat bug fix kernel patch moderate severity

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - noarch, x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Bugs Fixed

920499 - CVE-2013-0914 Kernel: sa_restorer information leak

920783 - CVE-2013-1848 kernel: ext3: format string issues

922353 - CVE-2012-6548 Kernel: udf: information leak on export

924689 - CVE-2013-2634 kernel: Information leak in the Data Center Bridging (DCB) component

924690 - CVE-2013-2635 kernel: Information leak in the RTNETLINK component

952197 - CVE-2013-3301 Kernel: tracing: NULL pointer dereference

955216 - CVE-2013-3222 Kernel: atm: update msg_namelen in vcc_recvmsg()

955599 - CVE-2013-3224 Kernel: Bluetooth: possible info leak in bt_sock_recvmsg()

955649 - CVE-2013-3225 Kernel: Bluetooth: RFCOMM - missing msg_namelen update in rfcomm_sock_recvmsg

968484 - CVE-2013-2128 Kernel: net: oops from tcp_collapse() when using splice(2)

969518 - CVE-2013-2852 kernel: b43: format string leaking into error msgs

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