Moderate: kernel security, bug fix, and enhancement update

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.

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):

• kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference (CVE-2023-28466)

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):

• RPL-P IOTG/RPL-S IOTG: cpu frequency issues (BZ#2179332)
• iscsi target deadlocks when the same host acts as an initiator to itself (i.e. connects via 127.0.0.1) (BZ#2182092)
• HPEMC RHEL 8 REGRESSION: acpi-cpufreq: Skip initialization if a cpufreq driver exists (BZ#2186305)
• kernel[-rt]: task deadline_test:2526 blocked for more than 600 seconds. (BZ#2188623)
• Dying percpu kworkers cause issues on isolated CPUs [rhel-8] (BZ#2189595)
• block layer: cherry pick recent upstream fixes (up to v6.3-rc1) for 8.9 (BZ#2193236)
• xfs: deadlock in xfs_btree_split_worker (BZ#2196390)
• RHEL 8.9 hwpoison: data loss when memory error occurs on hugetlb pagecache (BZ#2196665)
• Intel E810 card unable to create a MACVLAN on interface already configured as SRIOV (BZ#2203214)
• mlxsw: kselftest case -usr-libexec-kselftests-drivers-net-mlxsw-devlink-trap-policer-sh trigger call trace (BZ#2207564)
• Invalid character detected by rpminspect in Documentation/translations/zh_CN/process/magic-number.rst (BZ#2208284)

Enhancement(s):

• Intel 8.9 FEAT SPR power: Intel SST SNC4 support (BZ#2185604)

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 x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64
• Red Hat CodeReady Linux Builder for x86_64 8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian 8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.8 aarch64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.8 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 8.8 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 8.8 aarch64

Fixes

• BZ - 2179000 - CVE-2023-28466 kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference

CVEs

• CVE-2023-28466

References

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