Synopsis
Important: kernel security update
Type/Severity
Security Advisory: Important
Topic
An update for kernel is now available for Red Hat Enterprise Linux 6.7 Extended 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 Linux kernel's keyring handling code, where in key_reject_and_link() an uninitialized variable would eventually lead to arbitrary free address which could allow attacker to use a use-after-free style attack. (CVE-2016-4470, Important)
This issue was discovered by David Howells (Red Hat Inc.).
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 - Extended Update Support 6.7 x86_64
-
Red Hat Enterprise Linux Server - Extended Update Support 6.7 i386
-
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.7 s390x
-
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.7 ppc64
-
Red Hat Enterprise Linux EUS Compute Node 6.7 x86_64
-
RHEL for SAP HANA - Extended Update Support 6.7 x86_64
Fixes
- BZ - 1341716 - CVE-2016-4470 kernel: Uninitialized variable in request_key handling causes kernel crash in error handling path
CVEs
References
Vulmon