[RHSA-2015:0164-01] Moderate: kernel security and bug fix update

[news 28]

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Red Hat Security Advisory

 

Synopsis: Moderate: kernel security and bug fix update

Advisory ID: RHSA-2015:0164-01

Product: Red Hat Enterprise Linux

Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-0164.html

Issue date: 2015-02-10

CVE Names: CVE-2014-7822

=====================================================================

 

1. Summary:

 

Updated kernel packages that fix one security issue and several bugs are

now available for Red Hat Enterprise Linux 5.

 

Red Hat Product Security has rated this update as having Moderate 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.

 

2. Relevant releases/architectures:

 

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, noarch, ppc, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, noarch, x86_64

 

3. Description:

 

The kernel packages contain the Linux kernel, the core of any Linux

operating system.

 

* A flaw was found in the way the Linux kernel's splice() system call

validated its parameters. On certain file systems, a local, unprivileged

user could use this flaw to write past the maximum file size, and thus

crash the system. (CVE-2014-7822, Moderate)

 

Red Hat would like to thank Akira Fujita of NEC for reporting this issue.

 

This update also fixes the following bugs:

 

* Previously, hot-unplugging of a virtio-blk device could in some cases

lead to a kernel panic, for example during in-flight I/O requests.

This update fixes race condition in the hot-unplug code in the

virtio_blk.ko module. As a result, hot unplugging of the virtio-blk device

no longer causes the guest kernel oops when there are in-flight I/O

requests. (BZ#1006536)

 

* Before this update, due to a bug in the error-handling path, a corrupted

metadata block could be used as a valid block. With this update, the error

handling path has been fixed and more checks have been added to verify the

metadata block. Now, when a corrupted metadata block is encountered, it is

properly marked as corrupted and handled accordingly. (BZ#1034403)

 

* Previously, an incorrectly initialized variable resulted in a random

value being stored in the variable that holds the number of default ACLs,

and is sent in the SET_PATH_INFO data structure. Consequently, the setfacl

command could, under certain circumstances, fail with an "Invalid argument"

error. With this update, the variable is correctly initialized to zero,

thus fixing the bug. (BZ#1105625)

 

All kernel users are advised to upgrade to these updated packages, which

contain backported patches to correct these issues. The system must be

rebooted for this update to take effect.

 

4. 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/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.

 

5. Bugs fixed (https://bugzilla.redhat.com/):

 

1163792 - CVE-2014-7822 kernel: splice: lack of generic write checks

 

6. Package List:

 

Red Hat Enterprise Linux Desktop (v. 5 client):

 

Source:

kernel-2.6.18-402.el5.src.rpm

 

i386:

kernel-2.6.18-402.el5.i686.rpm

kernel-PAE-2.6.18-402.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-402.el5.i686.rpm

kernel-PAE-devel-2.6.18-402.el5.i686.rpm

kernel-debug-2.6.18-402.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-402.el5.i686.rpm

kernel-debug-devel-2.6.18-402.el5.i686.rpm

kernel-debuginfo-2.6.18-402.el5.i686.rpm

kernel-debuginfo-common-2.6.18-402.el5.i686.rpm

kernel-devel-2.6.18-402.el5.i686.rpm

kernel-headers-2.6.18-402.el5.i386.rpm

kernel-xen-2.6.18-402.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-402.el5.i686.rpm

kernel-xen-devel-2.6.18-402.el5.i686.rpm

 

noarch:

kernel-doc-2.6.18-402.el5.noarch.rpm

 

x86_64:

kernel-2.6.18-402.el5.x86_64.rpm

kernel-debug-2.6.18-402.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-402.el5.x86_64.rpm

kernel-debug-devel-2.6.18-402.el5.x86_64.rpm

kernel-debuginfo-2.6.18-402.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-402.el5.x86_64.rpm

kernel-devel-2.6.18-402.el5.x86_64.rpm

kernel-headers-2.6.18-402.el5.x86_64.rpm

kernel-xen-2.6.18-402.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-402.el5.x86_64.rpm

kernel-xen-devel-2.6.18-402.el5.x86_64.rpm

 

Red Hat Enterprise Linux (v. 5 server):

 

Source:

kernel-2.6.18-402.el5.src.rpm

 

i386:

kernel-2.6.18-402.el5.i686.rpm

kernel-PAE-2.6.18-402.el5.i686.rpm

kernel-PAE-debuginfo-2.6.18-402.el5.i686.rpm

kernel-PAE-devel-2.6.18-402.el5.i686.rpm

kernel-debug-2.6.18-402.el5.i686.rpm

kernel-debug-debuginfo-2.6.18-402.el5.i686.rpm

kernel-debug-devel-2.6.18-402.el5.i686.rpm

kernel-debuginfo-2.6.18-402.el5.i686.rpm

kernel-debuginfo-common-2.6.18-402.el5.i686.rpm

kernel-devel-2.6.18-402.el5.i686.rpm

kernel-headers-2.6.18-402.el5.i386.rpm

kernel-xen-2.6.18-402.el5.i686.rpm

kernel-xen-debuginfo-2.6.18-402.el5.i686.rpm

kernel-xen-devel-2.6.18-402.el5.i686.rpm

 

ia64:

kernel-2.6.18-402.el5.ia64.rpm

kernel-debug-2.6.18-402.el5.ia64.rpm

kernel-debug-debuginfo-2.6.18-402.el5.ia64.rpm

kernel-debug-devel-2.6.18-402.el5.ia64.rpm

kernel-debuginfo-2.6.18-402.el5.ia64.rpm

kernel-debuginfo-common-2.6.18-402.el5.ia64.rpm

kernel-devel-2.6.18-402.el5.ia64.rpm

kernel-headers-2.6.18-402.el5.ia64.rpm

kernel-xen-2.6.18-402.el5.ia64.rpm

kernel-xen-debuginfo-2.6.18-402.el5.ia64.rpm

kernel-xen-devel-2.6.18-402.el5.ia64.rpm

 

noarch:

kernel-doc-2.6.18-402.el5.noarch.rpm

 

ppc:

kernel-2.6.18-402.el5.ppc64.rpm

kernel-debug-2.6.18-402.el5.ppc64.rpm

kernel-debug-debuginfo-2.6.18-402.el5.ppc64.rpm

kernel-debug-devel-2.6.18-402.el5.ppc64.rpm

kernel-debuginfo-2.6.18-402.el5.ppc64.rpm

kernel-debuginfo-common-2.6.18-402.el5.ppc64.rpm

kernel-devel-2.6.18-402.el5.ppc64.rpm

kernel-headers-2.6.18-402.el5.ppc.rpm

kernel-headers-2.6.18-402.el5.ppc64.rpm

kernel-kdump-2.6.18-402.el5.ppc64.rpm

kernel-kdump-debuginfo-2.6.18-402.el5.ppc64.rpm

kernel-kdump-devel-2.6.18-402.el5.ppc64.rpm

 

s390x:

kernel-2.6.18-402.el5.s390x.rpm

kernel-debug-2.6.18-402.el5.s390x.rpm

kernel-debug-debuginfo-2.6.18-402.el5.s390x.rpm

kernel-debug-devel-2.6.18-402.el5.s390x.rpm

kernel-debuginfo-2.6.18-402.el5.s390x.rpm

kernel-debuginfo-common-2.6.18-402.el5.s390x.rpm

kernel-devel-2.6.18-402.el5.s390x.rpm

kernel-headers-2.6.18-402.el5.s390x.rpm

kernel-kdump-2.6.18-402.el5.s390x.rpm

kernel-kdump-debuginfo-2.6.18-402.el5.s390x.rpm

kernel-kdump-devel-2.6.18-402.el5.s390x.rpm

 

x86_64:

kernel-2.6.18-402.el5.x86_64.rpm

kernel-debug-2.6.18-402.el5.x86_64.rpm

kernel-debug-debuginfo-2.6.18-402.el5.x86_64.rpm

kernel-debug-devel-2.6.18-402.el5.x86_64.rpm

kernel-debuginfo-2.6.18-402.el5.x86_64.rpm

kernel-debuginfo-common-2.6.18-402.el5.x86_64.rpm

kernel-devel-2.6.18-402.el5.x86_64.rpm

kernel-headers-2.6.18-402.el5.x86_64.rpm

kernel-xen-2.6.18-402.el5.x86_64.rpm

kernel-xen-debuginfo-2.6.18-402.el5.x86_64.rpm

kernel-xen-devel-2.6.18-402.el5.x86_64.rpm

 

These packages are GPG signed by Red Hat for security. Our key and

details on how to verify the signature are available from

https://access.redhat.com/security/team/key/

 

7. References:

 

https://access.redhat.com/security/cve/CVE-2014-7822

https://access.redhat.com/security/updates/classification/#moderate

 

8. Contact:

 

The Red Hat security contact is . More contact

details at https://access.redhat.com/security/team/contact/

 

Copyright 2015 Red Hat, Inc.

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