Issued:
2024-01-30
Updated:
2024-01-30

RHSA-2024:0563 - Important: kernel-rt security update

Synopsis

Important: kernel-rt security update

Type/Severity

Security Advisory Important

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions.

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: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)

  • kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)

  • kernel: use after free in unix_stream_sendpage (CVE-2023-4622)

  • kernel: net/sched: sch_hfsc UAF (CVE-2023-4623)

  • kernel: use-after-free in sch_qfq network scheduler (CVE-2023-4921)

  • kernel: netfilter: potential slab-out-of-bound access due to integer underflow (CVE-2023-42753)

  • kernel: IGB driver inadequate buffer size for frames larger than MTU (CVE-2023-45871)

  • hw: Intel: Gather Data Sampling (GDS) side channel vulnerability (CVE-2022-40982)

  • kernel: UAF during login when accessing the shost ipaddress (CVE-2023-2162)

  • 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.

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 - Extended Update Support Extension8.4x86_64
Red Hat Enterprise Linux for Real Time for NFV - Telecommunications Update Service8.4x86_64
Red Hat Enterprise Linux for Real Time - Telecommunications Update Service8.4x86_64

Updated Packages

  • kernel-rt-debug-devel-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-modules-extra-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-4.18.0-305.120.1.rt7.196.el8_4.src.rpm
  • kernel-rt-debug-modules-extra-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debug-debuginfo-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-core-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debuginfo-common-x86_64-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-devel-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debug-modules-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-kvm-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debug-core-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debug-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debuginfo-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-debug-kvm-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm
  • kernel-rt-modules-4.18.0-305.120.1.rt7.196.el8_4.x86_64.rpm

Fixes

CVEs

References

Additional information