Red Hat: 2014:1763-01: kernel: Important Advisory
Summary
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 futex subsystem handled
reference counting when requeuing futexes during futex_wait(). A local,
unprivileged user could use this flaw to zero out the reference counter of
an inode or an mm struct that backs up the memory area of the futex, which
could lead to a use-after-free flaw, resulting in a system crash or,
potentially, privilege escalation. (CVE-2014-0205)
* A NULL pointer dereference flaw was found in the way the Linux kernel's
Stream Control Transmission Protocol (SCTP) implementation handled
simultaneous connections between the same hosts. A remote attacker could
use this flaw to crash the system. (CVE-2014-5077)
The security impact of the CVE-2014-0205 issue was discovered by Mateusz
Guzik of Red Hat.
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.
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://access.redhat.com/security/cve/CVE-2014-0205 https://access.redhat.com/security/cve/CVE-2014-5077 https://access.redhat.com/security/updates/classification/#important
Package List
Red Hat Enterprise Linux AUS (v. 6.2 server):
Source:
kernel-2.6.32-220.56.1.el6.src.rpm
noarch:
kernel-doc-2.6.32-220.56.1.el6.noarch.rpm
kernel-firmware-2.6.32-220.56.1.el6.noarch.rpm
x86_64:
kernel-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debug-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debug-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debug-devel-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.56.1.el6.x86_64.rpm
kernel-devel-2.6.32-220.56.1.el6.x86_64.rpm
kernel-headers-2.6.32-220.56.1.el6.x86_64.rpm
perf-2.6.32-220.56.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 6.2):
Source:
kernel-2.6.32-220.56.1.el6.src.rpm
x86_64:
kernel-debug-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
kernel-debuginfo-common-x86_64-2.6.32-220.56.1.el6.x86_64.rpm
perf-debuginfo-2.6.32-220.56.1.el6.x86_64.rpm
python-perf-2.6.32-220.56.1.el6.x86_64.rpm
python-perf-debuginfo-2.6.32-220.56.1.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/
Topic
Updated kernel packages that fix two security issues are now available forRed Hat Enterprise Linux 6.2 Advanced Update Support.Red Hat Product Security has rated this update as having Important securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links 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
1094455 - CVE-2014-0205 kernel: futex: refcount issue in case of requeue
1122982 - CVE-2014-5077 Kernel: net: SCTP: fix a NULL pointer dereference during INIT collisions