RHSA-2025:22854MediumCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
December 9, 2025
Last Modified
July 30, 2026

🔗 CVE IDs covered (9)

CVE-2025-39979 →CVE-2025-39981 →CVE-2025-39982 →CVE-2025-40058 →CVE-2025-40185 →CVE-2025-38737 →CVE-2025-39925 →CVE-2025-39983 →CVE-2025-40047 →

📋 Description

CVE-2025-38737 — kernel: cifs: Fix oops due to uninitialised variable CVE-2025-39925 — kernel: can: j1939: implement NETDEV_UNREGISTER notification handler CVE-2025-39979 — kernel: net/mlx5: fs, fix UAF in flow counter release CVE-2025-39981 — kernel: Bluetooth: MGMT: Fix possible UAFs CVE-2025-39982 — kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync CVE-2025-39983 — kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue CVE-2025-40047 — kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() CVE-2025-40058 — kernel: iommu/vt-d: Disallow dirty tracking if incoherent page walk CVE-2025-40185 — kernel: ice: ice_adapter: release xa entry on adapter allocation failure

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream (v. 10)
  • Red Hat Enterprise Linux BaseOS (v. 10)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • Red Hat Enterprise Linux Real Time (v. 10)
  • Red Hat Enterprise Linux Real Time for NFV (v. 10)
  • kernel-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.20.1.el10_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.20.1.el10_1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.20.1.el10_1.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.20.1.el10_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-core-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-core-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-debug-devel-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-devel-matched-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-modules-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-core-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-extra-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-devel-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-devel-matched-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-modules-0:6.12.0-124.20.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • +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: 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: Ensure Bluetooth management interfaces are hardened or, if unused, disabled. 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 (12)