(RHSA-2018:1318) Important: kernel security, bug fix, and enhancement update

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

Security Fix(es):

• Kernel: KVM: error in exception handling leads to wrong debug stack value (CVE-2018-1087)

• Kernel: error in exception handling leads to DoS (CVE-2018-8897)

• Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation (CVE-2017-16939)

• kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c (CVE-2018-1068)

• kernel: ptrace() incorrect error handling leads to corruption and DoS (CVE-2018-1000199)

• kernel: guest kernel crash during core dump on POWER9 host (CVE-2018-1091)

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

Red Hat would like to thank Andy Lutomirski for reporting CVE-2018-1087 and CVE-2018-1000199 and Nick Peterson (Everdox Tech LLC) and Andy Lutomirski for reporting CVE-2018-8897.

Bug Fix(es):

These updated kernel packages include also numerous bug fixes. Space precludes documenting all of these bug fixes in this advisory. See the bug fix descriptions in the related Knowledge Article: https://access.redhat.com/articles/3431641