Synopsis
Moderate: kernel security and enhancement update
Type/Severity
Security Advisory: Moderate
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 Moderate. 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 networking subsystem where a local attacker with CAP_NET_ADMIN capabilities could cause an out-of-bounds memory access by creating a smaller-than-expected ICMP header and sending to its destination via sendto(). (CVE-2016-8399, Moderate)
Enhancement(s):
- Previously, the mpt3sas driver incorrectly checked the Transport Layer Retries (TLR) state even on Redundant Array Of Independent Discs (RAID) devices. Consequently, a kernel panic occurred when mpt3sas attempted to read from the RAID devices. With this update, mpt3sas has been fixed to check the TLR state only for non-RAID devices, and the kernel no longer panics under the described circumstances. (BZ#1427459)
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 - 1403833 - CVE-2016-8399 kernel: net: Out of bounds stack read in memcpy_fromiovec
CVEs
References
Vulmon