Issued:
2023-10-10
Updated:
2023-10-10

RHSA-2023:5603 - 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 9.0 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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

  • kernel: net/sched: Use-after-free vulnerabilities in the net/sched classifiers: cls_fw, cls_u32 and cls_route (CVE-2023-4128)

  • 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: cls_flower: out-of-bounds write in fl_set_geneve_opt() (CVE-2023-35788)

  • kernel: hash collisions in the IPv6 connection lookup table (CVE-2023-1206)

  • kernel: Spectre v2 SMT mitigations problem (CVE-2023-1998)

  • kernel: fbcon: shift-out-of-bounds in fbcon_set_font() (CVE-2023-3161)

  • kernel: denial of service problem in net/unix/diag.c (CVE-2023-28327)

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-9.0.z12 Batch (BZ#2232645)

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_64 - Update Services for SAP Solutions9.0x86_64

Updated Packages

  • kernel-rt-debug-devel-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-kvm-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-5.14.0-70.75.1.rt21.146.el9_0.src.rpm
  • kernel-rt-devel-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-core-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debug-debuginfo-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debug-kvm-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-modules-extra-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-modules-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debug-core-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debug-modules-extra-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debug-modules-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debug-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm
  • kernel-rt-debuginfo-5.14.0-70.75.1.rt21.146.el9_0.x86_64.rpm

Fixes

CVEs

References

Additional information