Important: kernel security, bug fix, and enhancement update

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. 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: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)
• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)
• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

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):

• kernel: Add support for CPU-MF counter second version 7 (BZ#2050686)
• BNXT driver logging added latency tc-hw-offload (BZ#2059860)
• RHEL 8 not disabling the qla2x00_timer() when the system is rebooted. (BZ#2066347)
• spec: Fix separate tools build (BZ#2074075)
• VirtIO Throughput for VM on host with OVS HW-Offload is very low (BZ#2074222)
• kernel BUG at fs/ext4/mballoc.c:3245! (BZ#2074241)
• sctp connection abort unexpected. (BZ#2075131)
• [GSS]OCP node kernel crash due to ceph_fsync - unsafe_request_wait+0x143 (BZ#2080072)
• TCP doesn't retransmit if in reorder state and waits for RTO (BZ#2080973)
• kernel paging space issue (BZ#2080990)
• Important ice bug fixes (BZ#2081795)

Enhancement(s):

• Bring UV subsystem up to date with upstream kernel 5.12 (BZ#2058190)
• update qla2xxx driver to latest upstream (BZ#2060427)
• Update ice and iavf drivers to upstream v5.17 (BZ#2070546)

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 - Extended Update Support 8.4 x86_64
• Red Hat Enterprise Linux Server - AUS 8.4 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.4 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.4 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.4 x86_64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.4 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.4 ppc64le
• Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions 8.4 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 8.4 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 8.4 ppc64le
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 8.4 aarch64

Fixes

• BZ - 2014230 - CVE-2021-20322 kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies
• BZ - 2027239 - CVE-2021-4037 kernel: security regression for CVE-2018-13405
• BZ - 2061633 - CVE-2022-27666 kernel: buffer overflow in IPsec ESP transformation code

CVEs

• CVE-2021-4037
• CVE-2021-20322
• CVE-2022-27666

References

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