Important: kernel security and bug fix update

Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.0 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: KVM: cmpxchg_gpte can write to pfns outside the userspace region (CVE-2022-1158)
• kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size() (CVE-2022-2639)
• kernel: watch queue race condition can lead to privilege escalation (CVE-2022-2959)
• kernel: nfsd buffer overflow by RPC message over TCP with garbage data (CVE-2022-43945)
• hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR) (CVE-2022-21123)
• hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)
• hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW) (CVE-2022-21166)
• hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900)
• hw: cpu: AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825)
• hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)
• hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901)

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):

• sched/pelt: Fix attach_entity_load_avg() corner case (BZ#2105360)
• RHEL9[fleetwood][P9]:kdump fails to capture vmcore when crash is triggered while running forkoff. (BZ#2109144)
• ISST-LTE:[P10 Everest] [5.14.0-70.9.1.el9_0.ppc64le] HPT:RHEL9.0:ecolp95: lpar crashed at __list_del_entry_valid+0x90/0x100 and LPM failed (BZ#2112823)
• [rhel9] livepatch panic: RIP: 0010:0xffffffffc0e070c4 seq_read_iter+0x124/0x4b0 (BZ#2122625)
• System crashes due to list_add double add at iwl_mvm_mac_wake_tx_queue+0x71 (BZ#2123315)
• [Dell EMC 9.0 BUG] Any process performing I/O doesn't fail on degraded LVM RAID and IO process hangs (BZ#2126215)
• [HPEMC RHEL 9.0 REGRESSION] net, e810, ice: not enough device MSI-X vectors (BZ#2126491)
• RHEL9.0 - zfcp: fix missing auto port scan and thus missing target ports (BZ#2127874)
• Enable check-kabi (BZ#2132372)
• Add symbols to stablelist (BZ#2132373)
• Update RHEL9.1 kabi tooling (BZ#2132380)
• kABI: Prepare the MM subsystem for kABI lockdown (BZ#2133464)
• [Dell Storage 9.1 BUG] NVME command hang during storage array node reboot (BZ#2133553)
• WARNING: CPU: 116 PID: 3440 at arch/x86/mm/extable.c:105 ex_handler_fprestore+0x3f/0x50 (BZ#2134589)
• crypto/testmgr.c should not list dh, ecdh-nist-p256, ecdh-nist-p384 as .fips_allowed = 1 (BZ#2136523)
• FIPS self-tests for RSA pkcs7 signature verification (BZ#2136552)
• [ovs-tc] Bad length in dpctl/dump-flows (BZ#2137354)
• [RHEL9] s_pf0vf2: hw csum failure for mlx5 (BZ#2137355)
• kernel memory leak while freeing nested actions (BZ#2137356)
• ovs: backports from upstream (BZ#2137358)
• kernel should conform to FIPS-140-3 requirements (both parts) (BZ#2139095)
• [DELL EMC 9.0-RT BUG] System is not booting into RT Kernel with perc12. (BZ#2139214)
• Fix panic in nbd/004 test (BZ#2139535)
• Nested KVM is not working on RHEL 8.6 with hardware error 0x7 (BZ#2140141)
• [RHEL9] Practically limit "Dummy wait" workaround to old Intel systems (BZ#2142169)

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 9.0 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.0 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.0 ppc64le
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.0 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64
• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.0 x86_64
• Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.0 ppc64le
• Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.0 s390x
• Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.0 aarch64
• Red Hat Enterprise Linux Server for ARM 64 - 4 years of updates 9.0 aarch64
• Red Hat Enterprise Linux Server for IBM z Systems - 4 years of updates 9.0 s390x

Fixes

• BZ - 2069793 - CVE-2022-1158 kernel: KVM: cmpxchg_gpte can write to pfns outside the userspace region
• BZ - 2084479 - CVE-2022-2639 kernel: openvswitch: integer underflow leads to out-of-bounds write in reserve_sfa_size()
• BZ - 2090226 - CVE-2022-23816 CVE-2022-29900 hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions
• BZ - 2090237 - CVE-2022-21123 hw: cpu: incomplete clean-up of multi-core shared buffers (aka SBDR)
• BZ - 2090240 - CVE-2022-21125 hw: cpu: incomplete clean-up of microarchitectural fill buffers (aka SBDS)
• BZ - 2090241 - CVE-2022-21166 hw: cpu: incomplete clean-up in specific special register write operations (aka DRPW)
• BZ - 2103148 - CVE-2022-29901 hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions
• BZ - 2103153 - CVE-2022-23825 hw: cpu: AMD: Branch Type Confusion (non-retbleed)
• BZ - 2103681 - CVE-2022-2959 kernel: watch queue race condition can lead to privilege escalation
• BZ - 2115065 - CVE-2022-26373 hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions
• BZ - 2141752 - CVE-2022-43945 kernel: nfsd buffer overflow by RPC message over TCP with garbage data

CVEs

• CVE-2022-1158
• CVE-2022-2639
• CVE-2022-2959
• CVE-2022-21123
• CVE-2022-21125
• CVE-2022-21166
• CVE-2022-23816
• CVE-2022-23825
• CVE-2022-26373
• CVE-2022-29900
• CVE-2022-29901
• CVE-2022-43945

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/solutions/6971358