RedHat: RHSA-2014-0949:01 Important: kernel security update
Summary
The kernel packages contain the Linux kernel, the core of any Linux
operating system.
* It was found that the Linux kernel's ptrace subsystem allowed a traced
process' instruction pointer to be set to a non-canonical memory address
without forcing the non-sysret code path when returning to user space.
A local, unprivileged user could use this flaw to crash the system or,
potentially, escalate their privileges on the system. (CVE-2014-4699,
Important)
Note: The CVE-2014-4699 issue only affected systems using an Intel CPU.
Red Hat would like to thank Andy Lutomirski for reporting this issue.
All kernel users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. The system must be
rebooted for this update to take effect.
Summary
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.
References
https://www.redhat.com/security/data/cve/CVE-2014-4699.html https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux AUS (v. 6.2 server):
Source:
kernel-2.6.32-220.53.1.el6.src.rpm
noarch:
kernel-doc-2.6.32-220.53.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.53.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.53.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.53.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.53.1.el6.x86_64.rpm
perf-2.6.32-220.53.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source:
kernel-2.6.32-220.53.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.53.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.53.1.el6.x86_64.rpm
python-perf-2.6.32-220.53.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.53.1.el6.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/#package
Topic
Updated kernel packages that fix one security issue are now available forRed Hat Enterprise Linux 6.2 Advanced Update Support.The Red Hat Security Response Team has rated this update as havingImportant security impact. A Common Vulnerability Scoring System (CVSS)base score, which gives a detailed severity rating, is available from theCVE link in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux AUS (v. 6.2 server) - noarch, x86_64
Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64
Bugs Fixed
1115927 - CVE-2014-4699 kernel: x86_64: ptrace: sysret to non-canonical address
