- Issued:
- 2015-01-20
- Updated:
- 2015-01-20
RHSA-2015:0062 - Important: kernel security, bug fix, and enhancement update
Synopsis
Important: kernel security, bug fix, and enhancement update
Type/Severity
Security Advisory Important
Topic
Updated kernel packages that fix multiple security issues, several bugs, and add one enhancement are now available for Red Hat Enterprise Linux 6.5 Extended Update Support.
Red Hat Product Security 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.
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 SCTP implementation handled malformed or duplicate Address Configuration Change Chunks (ASCONF). A remote attacker could use either of these flaws to crash the system. (CVE-2014-3673, CVE-2014-3687, Important)
-
A flaw was found in the way the Linux kernel's SCTP implementation handled the association's output queue. A remote attacker could send specially crafted packets that would cause the system to use an excessive amount of memory, leading to a denial of service. (CVE-2014-3688, Important)
-
A flaw was found in the way the Linux kernel's VFS subsystem handled reference counting when performing unmount operations on symbolic links. A local, unprivileged user could use this flaw to exhaust all available memory on the system or, potentially, trigger a use-after-free error, resulting in a system crash or privilege escalation. (CVE-2014-5045, Moderate)
-
An integer overflow flaw was found in the way the lzo1x_decompress_safe() function of the Linux kernel's LZO implementation processed Literal Runs. A local attacker could, in extremely rare cases, use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-4608, Low)
Red Hat would like to thank Vasily Averin of Parallels for reporting CVE-2014-5045, and Don A. Bailey from Lab Mouse Security for reporting CVE-2014-4608. The CVE-2014-3673 issue was discovered by Liu Wei of Red Hat.
This update also fixes several bugs and adds one enhancement. Documentation for these changes is available from the Technical Notes document linked to in the References section.
All kernel users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add this enhancement. The system must be rebooted for this update to take effect.
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.
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 6.5 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 6.5 | i386 |
| Red Hat Enterprise Linux for Power, big endian - Extended Update Support | 6.5 | ppc64 |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 6.5 | s390x |
| Red Hat Enterprise Linux Server - TUS | 6.5 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Update Support from RHUI | 6.5 | x86_64 |
| Red Hat Enterprise Linux Server - Extended Update Support from RHUI | 6.5 | i386 |
| Red Hat Enterprise Linux Server - AUS | 6.5 | x86_64 |
| Red Hat Enterprise Linux EUS Compute Node | 6.5 | x86_64 |
Updated Packages
- python-perf-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-kdump-debuginfo-2.6.32-431.46.2.el6.s390x.rpm
- kernel-debuginfo-common-s390x-2.6.32-431.46.2.el6.s390x.rpm
- kernel-debug-debuginfo-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-headers-2.6.32-431.46.2.el6.s390x.rpm
- kernel-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-2.6.32-431.46.2.el6.s390x.rpm
- perf-debuginfo-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-debug-devel-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debuginfo-2.6.32-431.46.2.el6.s390x.rpm
- kernel-debug-debuginfo-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-doc-2.6.32-431.46.2.el6.noarch.rpm
- kernel-debug-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debuginfo-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debug-devel-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-devel-2.6.32-431.46.2.el6.ppc64.rpm
- python-perf-debuginfo-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debug-debuginfo-2.6.32-431.46.2.el6.s390x.rpm
- kernel-debug-devel-2.6.32-431.46.2.el6.s390x.rpm
- kernel-devel-2.6.32-431.46.2.el6.s390x.rpm
- kernel-kdump-devel-2.6.32-431.46.2.el6.s390x.rpm
- kernel-debug-debuginfo-2.6.32-431.46.2.el6.i686.rpm
- python-perf-2.6.32-431.46.2.el6.x86_64.rpm
- python-perf-2.6.32-431.46.2.el6.s390x.rpm
- kernel-debuginfo-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-devel-2.6.32-431.46.2.el6.x86_64.rpm
- python-perf-2.6.32-431.46.2.el6.i686.rpm
- perf-2.6.32-431.46.2.el6.i686.rpm
- kernel-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-debug-devel-2.6.32-431.46.2.el6.i686.rpm
- kernel-debug-2.6.32-431.46.2.el6.i686.rpm
- kernel-headers-2.6.32-431.46.2.el6.i686.rpm
- python-perf-debuginfo-2.6.32-431.46.2.el6.s390x.rpm
- perf-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-2.6.32-431.46.2.el6.i686.rpm
- kernel-headers-2.6.32-431.46.2.el6.ppc64.rpm
- perf-2.6.32-431.46.2.el6.s390x.rpm
- kernel-firmware-2.6.32-431.46.2.el6.noarch.rpm
- python-perf-debuginfo-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-debug-2.6.32-431.46.2.el6.s390x.rpm
- perf-debuginfo-2.6.32-431.46.2.el6.i686.rpm
- perf-debuginfo-2.6.32-431.46.2.el6.s390x.rpm
- python-perf-debuginfo-2.6.32-431.46.2.el6.i686.rpm
- kernel-2.6.32-431.46.2.el6.src.rpm
- perf-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-bootwrapper-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debuginfo-common-i686-2.6.32-431.46.2.el6.i686.rpm
- kernel-debuginfo-2.6.32-431.46.2.el6.i686.rpm
- kernel-headers-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-debug-2.6.32-431.46.2.el6.x86_64.rpm
- kernel-devel-2.6.32-431.46.2.el6.i686.rpm
- kernel-abi-whitelists-2.6.32-431.46.2.el6.noarch.rpm
- kernel-kdump-2.6.32-431.46.2.el6.s390x.rpm
- perf-debuginfo-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debuginfo-common-ppc64-2.6.32-431.46.2.el6.ppc64.rpm
- kernel-debuginfo-common-x86_64-2.6.32-431.46.2.el6.x86_64.rpm
Fixes
- This content is not included.BZ - 1113899
- This content is not included.BZ - 1122472
- This content is not included.BZ - 1147850
- This content is not included.BZ - 1155731
- This content is not included.BZ - 1155745
CVEs
References
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.5_Technical_Notes/kernel.html
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.