RHBA-2019:0192 - Bug Fix Advisory

Topic

Updated selinux-policy packages that fix two bugs are now available for Red Hat Enterprise Linux 7.

Description

The selinux-policy packages contain the rules that govern how confined processes run on the system.

This update fixes the following bugs:

• Prior to this update, an allow rule for the snapper daemon (snapperd) was missing in the SELinux policy. Consequently, snapper was not able to create a configuration file on a btrfs volume for a new snapshot with SELinux in enforcing mode. With this update, the missing rule has been added, and SELinux now allows snapperd to manage all non-security directories. (BZ#1661158)
• Previously, an allow rule for the gssd_t type was missing in the SELinux policy. As a consequence, SELinux in enforcing mode occasionally prevented processes running as gssd_t from accessing kernel keyrings of other processes and could block for example sec=krb5 mounts. The rule has been added to the policy, and processes running as gssd_t are now able to access keyrings of other processes. (BZ#1665815)

Users of selinux-policy are advised to upgrade to these updated packages, which fix these bugs.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux Server - AUS 7.6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.6 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.6 ppc64le
• Red Hat Enterprise Linux Server - TUS 7.6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux for ARM 64 7 aarch64
• Red Hat Enterprise Linux for Power 9 7 ppc64le
• Red Hat Enterprise Linux EUS Compute Node 7.6 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 7.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux for IBM System z (Structure A) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 1661158 - IO error and AVC denial when creating snapshot using snapper tool [rhel-7.6.z]
• BZ - 1665815 - SELinux sometimes prevents sec=krb5 mounts [rhel-7.6.z]

CVEs

(none)

References

(none)