Synopsis

Important: kernel security update

Type/Severity

Security Advisory: Important

Topic

An update for kernel is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• A flaw was found in the way the Linux kernel loaded ELF executables. Provided that an application was built as Position Independent Executable (PIE), the loader could allow part of that application's data segment to map over the memory area reserved for its stack, potentially resulting in memory corruption. An unprivileged local user with access to SUID (or otherwise privileged) PIE binary could use this flaw to escalate their privileges on the system. (CVE-2017-1000253, Important)
  

Red Hat would like to thank Qualys Research Labs for reporting this issue.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux Server - AUS 6.2 x86_64

Fixes

• BZ - 1492212 - CVE-2017-1000253 kernel: load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary

CVEs

• CVE-2017-1000253

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/security/vulnerabilities/3189592

Red Hat Enterprise Linux Server - AUS 6.2

SRPM
kernel-2.6.32-220.76.1.el6.src.rpm	SHA-256: e3af485c53b6945b8ac53903894090abd5af835ebb3733addea6c364bf47f22a
x86_64
kernel-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: d6045cd44252b853e1fd57b141c01bea25223cb4b4199917eeabaf76802e489e
kernel-debug-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 0555cef73c23cfeac81c6c009841c5c900188d6716e6135430612dfe5a396b04
kernel-debug-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 6022b9b19a4ed8f788da7f8a3ea86008b69be80857128704942f964d81acc99c
kernel-debug-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 6022b9b19a4ed8f788da7f8a3ea86008b69be80857128704942f964d81acc99c
kernel-debug-devel-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 237b459779eae1c4fbb7bd105691cbe0ae0e223dc8f360a7ec9ce3548593a1e0
kernel-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: ee8ffd3428573d187da14de46258106e5587ede75ca73d7ff73acc41412eaa26
kernel-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: ee8ffd3428573d187da14de46258106e5587ede75ca73d7ff73acc41412eaa26
kernel-debuginfo-common-x86_64-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: b0842ddb5c5437f24ee2813a6233875e02cd09e256b2ec370d88fc0906eee76f
kernel-debuginfo-common-x86_64-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: b0842ddb5c5437f24ee2813a6233875e02cd09e256b2ec370d88fc0906eee76f
kernel-devel-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 22082260f8ea133e62507c3cbcd4beeb613fc7d98d2a57a2d0fecc74a3479b38
kernel-doc-2.6.32-220.76.1.el6.noarch.rpm	SHA-256: a773fb65a3eadbb8ae9cd5d9ee01bdebb4e1624ad19a7d9f7c552cfb86eef757
kernel-firmware-2.6.32-220.76.1.el6.noarch.rpm	SHA-256: 9f565e1c1f9811936bf364e43ee6ecef20a2b01a3ea07e0f287365911f55d5cb
kernel-headers-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: b7863aac138220b61c8ddae2203fb3ca0d5614fc65fc00dca059fff3b46daa36
perf-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: a448214326cd3a5102c3d5922e78e0188b132aac6698834079d4bfe2ca1c4bb1
perf-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: abcad42a32c3df85ee5509ee204d5250e4947da488552b7536a31c02a0f6d7bf
perf-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: abcad42a32c3df85ee5509ee204d5250e4947da488552b7536a31c02a0f6d7bf
python-perf-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 96adf5728bca0885677bdee93acbe7d641429cdd35690461a22e41b12ad7dbb7
python-perf-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 6321c2ac6bce07e1401cd14f73b5cf9bec0349b972877701a358fd9415f0a488
python-perf-debuginfo-2.6.32-220.76.1.el6.x86_64.rpm	SHA-256: 6321c2ac6bce07e1401cd14f73b5cf9bec0349b972877701a358fd9415f0a488