Important: kernel security, bug fix, and enhancement update

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.8 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: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails (CVE-2023-3609)
• kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208)
• kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)
• hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)
• kernel: use-after-free due to race condition occurring in dvb_register_device() (CVE-2022-45884)
• kernel: use-after-free due to race condition occurring in dvb_net.c (CVE-2022-45886)
• kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c (CVE-2022-45919)
• kernel: Race between task migrating pages and another task calling exit_mmap to release those same pages getting invalid opcode BUG in include/linux/swapops.h (CVE-2023-4732)
• kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment (CVE-2023-38409)
• kernel: use-after-free in smb2_is_status_io_timeout() (CVE-2023-1192)

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):

• Intel 8.8 BUG SPR IOMMU: QAT Device Address Translation Issue with Invalidation Completion Ordering (BZ#2221097)
• RHEL 8.9: intel_pstate may provide incorrect scaling values for hybrid capable systems with E-cores disabled (BZ#2223403)
• Bring MD code inline with upstream (BZ#2235655)
• NAT sport clash in OCP causing 1 second TCP connection establishment delay. (BZ#2236514)
• ibmvnic: NONFATAL reset causes dql BUG_ON crash (BZ#2236701)
• PVT:1050:NXGZIP: LPM of RHEL client lpar got failed with error HSCLA2CF in 19th loops (BZ#2236703)
• xfs: mount fails when device file name is long (BZ#2236813)
• NFSv4.0 client hangs when server reboot while client had outstanding lock request to the server (BZ#2237840)
• i40e: backport selected bugfixes (BZ#2238305)
• Updates for NFS/NFSD/SUNRPC for RHEL 8.9 (BZ#2238394)
• SCSI updates for RHEL 8.9 (BZ#2238770)
• kernel: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:35 at: sock_map_update_elem_sys+0x85/0x2a0 (BZ#2239475)
• Random delay receiving packets after bringing up VLAN on top of VF with vf-vlan-pruning enabled (BZ#2240751)
• RHEL-8.9 RDMA/restrack: Release MR restrack when delete (BZ#2244423)

Enhancement(s):

• Intel 8.9 FEAT EMR power: Add EMR CPU support to intel_rapl driver (BZ#2230146)
• Intel 8.9 FEAT EMR tools: Add EMR CPU support to turbostat (BZ#2230154)
• Intel 8.9 FEAT EMR power: Add EMR support to the intel_idle driver (BZ#2230155)
• Intel 8.9 FEAT EMR RAS: Add EDAC support for EMR (BZ#2230161)
• Intel 8.9 FEAT general: intel-speed-select (ISST): Update to latest release (BZ#2230163)
• Intel 8.9 FEAT cpufreq: intel_pstate: Enable HWP IO boost for all servers (BZ#2232123)

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 8.8 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.8 s390x
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.8 ppc64le
• 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 - 2148510 - CVE-2022-45884 kernel: use-after-free due to race condition occurring in dvb_register_device()
• BZ - 2148517 - CVE-2022-45886 kernel: use-after-free due to race condition occurring in dvb_net.c
• BZ - 2151956 - CVE-2022-45919 kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c
• BZ - 2154178 - CVE-2023-1192 kernel: use-after-free in smb2_is_status_io_timeout()
• BZ - 2223949 - CVE-2022-40982 hw: Intel: Gather Data Sampling (GDS) side channel vulnerability
• BZ - 2225201 - CVE-2023-3609 kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails
• BZ - 2225511 - CVE-2023-4128 CVE-2023-4206 CVE-2023-4207 CVE-2023-4208 kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route
• BZ - 2230042 - CVE-2023-38409 kernel: fbcon: out-of-sync arrays in fbcon_mode_deleted due to wrong con2fb_map assignment
• BZ - 2236982 - CVE-2023-4732 kernel: Race between task migrating pages and another task calling exit_mmap to release those same pages getting invalid opcode BUG in include/linux/swapops.h
• BZ - 2239843 - CVE-2023-42753 kernel: netfilter: potential slab-out-of-bound access due to integer underflow

CVEs

• CVE-2022-40982
• CVE-2022-45884
• CVE-2022-45886
• CVE-2022-45919
• CVE-2023-1192
• CVE-2023-3609
• CVE-2023-4128
• CVE-2023-4206
• CVE-2023-4207
• CVE-2023-4208
• CVE-2023-4732
• CVE-2023-38409
• CVE-2023-42753

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/solutions/7027704