Issued:
2023-09-12
Updated:
2023-09-12

RHSA-2023:5091 - Important: kernel-rt security and bug fix update

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 9.

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests (CVE-2023-3390)

  • kernel: netfilter: nf_tables: fix chain binding transaction logic in the abort path of NFT_MSG_NEWRULE (CVE-2023-3610)

  • kernel: net/sched: cls_fw component can be exploited as result of failure in tcf_change_indev function (CVE-2023-3776)

  • kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove() (CVE-2023-4004)

  • kernel: netfilter: nf_tables_newrule when adding a rule with NFTA_RULE_CHAIN_ID leads to use-after-free (CVE-2023-4147)

  • kernel: nf_tables: use-after-free in nft_chain_lookup_byid() (CVE-2023-31248)

  • kernel: nf_tables: stack-out-of-bounds-read in nft_byteorder_eval() (CVE-2023-35001)

  • kernel: save/restore speculative MSRs during S3 suspend/resume (CVE-2023-1637)

  • hw: amd: Cross-Process Information Leak (CVE-2023-20593)

  • kernel: bypass of shadow stack protection due to a logic error (CVE-2023-21102)

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-rt: update RT source tree to the latest RHEL-9.2.z3 Batch (BZ#2228482)

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

ProductVersionArch
Red Hat Enterprise Linux for x86_649x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.6x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.6x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.4x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle9.2x86_64

Updated Packages

  • kernel-rt-modules-core-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-5.14.0-284.30.1.rt14.315.el9_2.src.rpm
  • kernel-rt-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-modules-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-devel-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-modules-core-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debuginfo-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-modules-extra-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-kvm-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-modules-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-devel-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-kvm-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-core-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-core-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-modules-extra-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm
  • kernel-rt-debug-debuginfo-5.14.0-284.30.1.rt14.315.el9_2.x86_64.rpm

Fixes

CVEs

References

Additional information