Low: kernel-alt security and bug fix update

Synopsis

Low: kernel-alt security and bug fix update

Type/Severity

Security Advisory: Low

Topic

An update for kernel-alt is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Low. 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-alt packages provide the Linux kernel version 4.x.

Security Fix(es):

• kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c (CVE-2018-13095)
  

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.

Bug Fix(es):

• [rhel-alt] Could not remove the function from /sys/kernel/debug/tracing/kprobe_events (BZ#1677171)
  
• RHEL-ALT-7.6z: usage of stale vma in do_fault() can lead to a crash (BZ#1679243)
  
• RHEL-Alt-7.6 - Backport support for software count cache flush Spectre v2 mitigation (BZ#1692682)
  
• RHEL-Alt-7.6 - [LTC Test][SR-IOV]: Guest with VF pass-through crashes during reboot operation in a loop. (kvm) (libvirt/kernel) (BZ#1693146)
  
• RHEL-Alt-7.6 - Tolerate new s390x crypto hardware for migration (BZ#1695643)

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 for ARM 64 7 aarch64
• Red Hat Enterprise Linux for Power 9 7 ppc64le
• Red Hat Enterprise Linux for IBM System z (Structure A) 7 s390x

Fixes

• BZ - 1597775 - CVE-2018-13095 kernel: NULL pointer dereference in fs/xfs/libxfs/xfs_inode_buf.c

CVEs

• CVE-2018-13095

References

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