RHSA-2024:1253HighCVSS 8.2

Red Hat Security Advisory: kernel live patch module security update

Published
March 12, 2024
Last Modified
July 30, 2026

🔗 CVE IDs covered (6)

CVE-2024-0646 →CVE-2023-2163 →CVE-2023-3390 →CVE-2023-3609 →CVE-2023-4622 →CVE-2023-6546 →

📋 Description

CVE-2023-2163 — kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe CVE-2023-3390 — kernel: UAF in nftables when nft_set_lookup_global triggered after handling named and anonymous sets in batch requests CVE-2023-3609 — kernel: net/sched: cls_u32 component reference counter leak if tcf_change_indev() fails CVE-2023-4622 — kernel: use after free in unix_stream_sendpage CVE-2023-6546 — kernel: GSM multiplexing race condition leads to privilege escalation CVE-2024-0646 — kernel: ktls overwrites readonly memory pages when using function splice with a ktls socket as destination

🎯 Affected products36

  • Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-0:1-6.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-0:1-6.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-0:1-6.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-debuginfo-0:1-6.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-debuginfo-0:1-6.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-debugsource-0:1-6.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_64_1-debugsource-0:1-6.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-0:1-5.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-0:1-5.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-0:1-5.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-debuginfo-0:1-5.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-debuginfo-0:1-5.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-debugsource-0:1-5.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_70_1-debugsource-0:1-5.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-0:1-4.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-0:1-4.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-0:1-4.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-debuginfo-0:1-4.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-debuginfo-0:1-4.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-debugsource-0:1-4.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_75_1-debugsource-0:1-4.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-0:1-3.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-0:1-3.el9_0.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-0:1-3.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-debuginfo-0:1-3.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-debuginfo-0:1-3.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-debugsource-0:1-3.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_80_1-debugsource-0:1-3.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • kpatch-patch-5_14_0-70_85_1-0:1-2.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.0)
  • +6 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 Workaround: The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl. This would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space. For Red Hat Enterprise Linux 8 to confirm the current state, inspect the sysctl with the command: # cat /proc/sys/kernel/unprivileged_bpf_disabled The setting of 1 would mean that unprivileged users can not use eBPF, mitigating the flaw. Workaround: To mitigate this issue, prevent module cls_u32 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Workaround: Mitigation for this issue is either not available or 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 `n_gsm` kernel module from being loaded. For instructions on how to blacklist a kernel module, please see https://access.redhat.com/solutions/41278. Workaround: To mitigate this issue, prevent module tls from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.

🔗 References (9)