RHSA-2026:10108HighCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
April 23, 2026
Last Modified
September 11, 2026

🔗 CVE IDs covered (11)

CVE-2025-68800 →CVE-2026-23066 →CVE-2026-23111 →CVE-2026-23193 →CVE-2026-23231 →CVE-2026-31402 →CVE-2025-39981 →CVE-2026-23097 →CVE-2026-23144 →CVE-2026-23171 →CVE-2026-23204 →

📋 Description

CVE-2025-39981 — kernel: Bluetooth: MGMT: Fix possible UAFs CVE-2025-68800 — kernel: mlxsw: spectrum_mr: Fix use-after-free when updating multicast route stats CVE-2026-23066 — kernel: Linux kernel: Denial of Service via unsafe requeue in rxrpc_recvmsg CVE-2026-23097 — kernel: Linux kernel: Denial of Service due to a deadlock in hugetlb folio migration CVE-2026-23111 — kernel: Kernel: Privilege escalation or denial of service in nf_tables via inverted element activity check CVE-2026-23144 — kernel: Linux kernel: Local denial of service and memory leak in DAMON sysfs via setup failure CVE-2026-23171 — kernel: Linux kernel: Use-after-free in bonding module can cause system crash or arbitrary code execution CVE-2026-23193 — kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_session_usage_count() CVE-2026-23204 — kernel: net/sched: cls_u32: use skb_header_pointer_careful() CVE-2026-23231 — kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain() CVE-2026-31402 — kernel: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache

🎯 Affected products200

  • Red Hat CodeReady Linux Builder EUS (v.9.4)
  • Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • Red Hat Enterprise Linux Real Time EUS (v.9.4)
  • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)
  • bpftool-0:7.3.0-427.121.1.el9_4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-0:7.3.0-427.121.1.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-0:7.3.0-427.121.1.el9_4.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-0:7.3.0-427.121.1.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.x86_64 as a component of Red Hat Enterprise Linux Real Time EUS (v.9.4)
  • bpftool-debuginfo-0:7.3.0-427.121.1.el9_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV EUS (v.9.4)
  • kernel-0:5.14.0-427.121.1.el9_4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • kernel-0:5.14.0-427.121.1.el9_4.ppc64le as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • kernel-0:5.14.0-427.121.1.el9_4.s390x as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • kernel-0:5.14.0-427.121.1.el9_4.src as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • kernel-0:5.14.0-427.121.1.el9_4.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • kernel-64k-0:5.14.0-427.121.1.el9_4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • kernel-64k-core-0:5.14.0-427.121.1.el9_4.aarch64 as a component of Red Hat Enterprise Linux BaseOS EUS (v.9.4)
  • +170 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: Ensure Bluetooth management interfaces are hardened or, if unused, disabled. Workaround: To mitigate this issue, prevent module rxrpc 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 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: To mitigate this issue, prevent module nf_tables 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: To mitigate this issue, prevent the `bonding` kernel module from loading if bonding interfaces are not required. This can be achieved by creating a modprobe configuration file. Create a file named `/etc/modprobe.d/disable-bonding.conf` with the following content: `install bonding /bin/true` After creating the file, a system reboot is required for the change to take effect if the module is currently loaded. This action will prevent the creation and use of bonding network interfaces. Workaround: To mitigate this issue, prevent module iscsi_target_mod 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: In order to trigger the issue, it requires the ability to create user/net namespaces. On non-containerized deployments of Red Hat Enterprise Linux 7.4 and later, it is recommended to disable user namespaces by setting user.max_user_namespaces to 0: # echo "user.max_user_namespaces=0" > /etc/sysctl.d/userns.conf # sysctl -p /etc/sysctl.d/userns.conf On containerized deployments, such as Red Hat OpenShift Container Platform, do not use this mitigation as the functionality is needed to be enabled. 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.

🔗 References (14)