RHSA-2026:2573MediumCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
February 11, 2026
Last Modified
August 13, 2026

🔗 CVE IDs covered (11)

CVE-2022-49503 →CVE-2022-50673 →CVE-2023-53673 →CVE-2023-53751 →CVE-2022-50865 →CVE-2023-53192 →CVE-2023-53833 →CVE-2025-40251 →CVE-2025-40304 →CVE-2025-40322 →CVE-2025-68301 →

📋 Description

CVE-2022-49503 — kernel: Linux kernel: ath9k_htc out-of-bounds access vulnerability CVE-2022-50673 — kernel: ext4: fix use-after-free in ext4_orphan_cleanup CVE-2022-50865 — kernel: tcp: fix a signed-integer-overflow bug in tcp_add_backlog() CVE-2023-53192 — kernel: Linux kernel: Out-of-bounds write in VXLAN due to incorrect nexthop hash size leading to denial of service CVE-2023-53673 — kernel: Bluetooth: hci_event: call disconnect callback before deleting conn CVE-2023-53751 — kernel: Linux kernel (CIFS): Use-after-free vulnerability allows data integrity compromise and denial of service CVE-2023-53833 — kernel: drm/i915: Fix NULL ptr deref by checking new_crtc_state CVE-2025-40251 — kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy CVE-2025-40304 — kernel: Linux kernel: Out-of-bounds write in fbdev can lead to privilege escalation, information disclosure, or denial of service. CVE-2025-40322 — kernel: Linux kernel: Information disclosure and denial of service via out-of-bounds read in font glyph handling CVE-2025-68301 — kernel: net: atlantic: fix fragment overflow handling in RX path

🎯 Affected products136

  • Red Hat Enterprise Linux AppStream E4S (v.9.0)
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-0:5.14.0-70.165.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-0:5.14.0-70.165.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.s390x as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux AppStream E4S (v.9.0)
  • bpftool-debuginfo-0:5.14.0-70.165.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-0:5.14.0-70.165.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-0:5.14.0-70.165.1.el9_0.src as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-0:5.14.0-70.165.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-abi-stablelists-0:5.14.0-70.165.1.el9_0.noarch as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-core-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-core-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-core-0:5.14.0-70.165.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-core-0:5.14.0-70.165.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-debug-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-debug-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-debug-0:5.14.0-70.165.1.el9_0.s390x as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-debug-0:5.14.0-70.165.1.el9_0.x86_64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-debug-core-0:5.14.0-70.165.1.el9_0.aarch64 as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • kernel-debug-core-0:5.14.0-70.165.1.el9_0.ppc64le as a component of Red Hat Enterprise Linux BaseOS E4S (v.9.0)
  • +106 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 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 `cifs` kernel module from loading if CIFS functionality is not required. Create a file named `/etc/modprobe.d/disable-cifs.conf` with the following content: ``` install cifs /bin/true ``` This will prevent the `cifs` module from being loaded automatically. A system reboot is required for this change to take effect. Note that disabling the `cifs` module will prevent the system from mounting CIFS shares. Workaround: To mitigate this issue, prevent the i915 module from being loaded. See https://access.redhat.com/solutions/41278 for instructions on how to blacklist a kernel module. Note that this will disable Intel integrated graphics. Workaround: To mitigate this issue, prevent the `fbdev` kernel module from loading if it is not required for system operation. Create a file named `/etc/modprobe.d/disable-fbdev.conf` with the following content: ``` install fbdev /bin/true blacklist fbdev ``` After creating the file, regenerate the initramfs using `dracut -f -v` and reboot the system for the changes to take effect. This mitigation may impact systems that rely on `fbdev` for console display or specific graphics hardware, requiring careful evaluation before implementation. Workaround: To mitigate this issue, prevent the atlantic module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.

🔗 References (14)