RHSA-2024:0431HighCVSS 8.8

Red Hat Security Advisory: kernel-rt security and bug fix update

Published
January 25, 2024
Last Modified
October 30, 2026

🔗 CVE IDs covered (12)

CVE-2023-1195 →CVE-2023-3567 →CVE-2023-3777 →CVE-2023-5178 →CVE-2023-45871 →CVE-2023-52974 →CVE-2023-2162 →CVE-2023-4623 →CVE-2023-46813 →CVE-2023-52975 →CVE-2022-36879 →CVE-2022-41858 →

📋 Description

CVE-2022-36879 — kernel: xfrm_expand_policies() in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice CVE-2022-41858 — kernel: null-ptr-deref vulnerabilities in sl_tx_timeout in drivers/net/slip CVE-2023-1195 — kernel: use-after-free caused by invalid pointer hostname in fs/cifs/connect.c CVE-2023-2162 — kernel: UAF during login when accessing the shost ipaddress CVE-2023-3567 — kernel: use after free in vcs_read in drivers/tty/vt/vc_screen.c due to race CVE-2023-3777 — kernel: use-after-free in netfilter: nf_tables CVE-2023-4623 — kernel: net/sched: sch_hfsc UAF CVE-2023-5178 — kernel: use after free in nvmet_tcp_free_crypto in NVMe CVE-2023-45871 — kernel: IGB driver inadequate buffer size for frames larger than MTU CVE-2023-46813 — kernel: SEV-ES local priv escalation CVE-2023-52974 — kernel: scsi: iscsi_tcp: Fix UAF during login when accessing the shost ipaddress CVE-2023-52975 — kernel: scsi: iscsi_tcp: Fix UAF during logout when accessing the shost ipaddress

🎯 Affected products32

  • Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.src as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.src as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-core-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-kvm-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debug-modules-extra-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debug-modules-extra-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debuginfo-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-devel-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-kvm-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • kernel-rt-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.0)
  • kernel-rt-modules-0:5.14.0-70.85.1.rt21.156.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.0)
  • +2 more not shown

✅ Remediation

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. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: This flaw can be mitigated by preventing the affected slip driver from loading during the boot time, and ensuring the module is added to the blacklist file. ~~~ Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~ Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: This flaw can be mitigated by preventing the affected iscsi_tcp.ko kernel module from loading during the boot time, ensure the module is added into the blacklist file. ~~~ Refer: How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~ Workaround: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: Mitigation for this issue is to skip loading the affected module "netfilter" onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time. ~~~ How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278 ~~~ Workaround: To mitigate this issue, prevent the module sch_hfsc from being loaded by blacklisting the module to prevent it from loading automatically. ~~~ https://access.redhat.com/solutions/41278 ~~~

🔗 References (13)