Moderate: Red Hat Enterprise MRG Realtime 2.5 security and enhancement update

Synopsis

Moderate: Red Hat Enterprise MRG Realtime 2.5 security and enhancement update

Type/Severity

Security Advisory: Moderate

Topic

Updated Red Hat Enterprise Messaging, Realtime, and Grid (MRG) Realtime packages that fix multiple security issues and add one enhancement are now available for Red Hat Enterprise MRG 2.5.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

Red Hat Enterprise MRG is a next-generation IT infrastructure for enterprise computing. MRG offers increased performance, reliability, interoperability, and faster computing for enterprise customers.

Security Fix(es):

• kernel: rds_message_alloc_sgs() function doesn't validate value used during DMA page allocation causes heap out-of-bounds write (CVE-2018-5332, Moderate)
  
• kernel: Null pointer dereference in rds_atomic_free_op() allows denial-of-service (CVE-2018-5333, Moderate)
  

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Enhancement(s):

• The kernel-rt packages have been upgraded to version 3.10.0-693.21.1, which provides a number of security and bug fixes over the previous version. (BZ#1537669)
  

All Red Hat Enterprise MRG Realtime users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add this enhancement.

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

After installing the update, the system must be restarted for the changes to take effect.

Affected Products

• MRG Realtime 2 x86_64

Fixes

• BZ - 1533890 - CVE-2018-5332 kernel: rds_message_alloc_sgs() function doesn't validate value used during DMA page allocation causes heap out-of-bounds write
• BZ - 1533891 - CVE-2018-5333 kernel: Null pointer dereference in rds_atomic_free_op() allowing denial-of-service
• BZ - 1537669 - update the MRG 2.5.z 3.10 kernel-rt sources

CVEs

• CVE-2018-5332
• CVE-2018-5333

References

• https://access.redhat.com/security/updates/classification/#moderate