RHSA-2026:10756MediumCVSS 7.5

Red Hat Security Advisory: kernel-rt security update

Published
April 27, 2026
Last Modified
August 13, 2026

🔗 CVE IDs covered (9)

CVE-2026-23231 →CVE-2023-53539 →CVE-2025-38024 →CVE-2026-23216 →CVE-2022-50053 →CVE-2025-38180 →CVE-2025-71238 →CVE-2026-23193 →CVE-2026-23204 →

📋 Description

CVE-2022-50053 — kernel: iavf: Fix reset error handling CVE-2023-53539 — kernel: RDMA/rxe: Fix incomplete state save in rxe_requester CVE-2025-38024 — kernel: Linux kernel: RDMA/rxe use-after-free vulnerability leading to potential arbitrary code execution CVE-2025-38180 — kernel: Linux kernel: Use-After-Free vulnerability in ATM subsystem CVE-2025-71238 — kernel: Linux kernel (qla2xxx): Double free vulnerability leads to denial of service and potential privilege escalation. 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-2026-23216 — kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() CVE-2026-23231 — kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain()

🎯 Affected products13

  • Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-0:3.10.0-1160.148.1.rt56.1300.el7.src as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-debuginfo-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debug-devel-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debuginfo-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-debuginfo-common-x86_64-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-devel-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-doc-0:3.10.0-1160.148.1.rt56.1300.el7.noarch as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-debuginfo-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)
  • kernel-rt-trace-devel-0:3.10.0-1160.148.1.rt56.1300.el7.x86_64 as a component of Red Hat Enterprise Linux for Real Time (v. 7 ELS)

✅ 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 don't 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 the rdma_rxe module from being loaded. See https://access.redhat.com/solutions/41278 for instructions on blacklisting kernel modules. Workaround: To mitigate this issue, prevent the `rxe` kernel module from loading. This can be achieved by creating a blacklist rule. 1. Create a file `/etc/modprobe.d/blacklist-rxe.conf` with the following content: ``` blacklist rxe install rxe /bin/true ``` 2. Rebuild the initial ramdisk: ```bash dracut -f -v ``` 3. Reboot the system for the changes to take effect. Warning: Blacklisting the `rxe` module may impact functionality that relies on Soft RoCE. Workaround: To mitigate this issue, prevent module qla2xxx 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 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: To mitigate this issue, prevent the iscsi_target_mod module from being loaded. See https://access.redhat.com/solutions/41278 for instructions on how to blacklist kernel modules. 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 8, 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.

🔗 References (12)