RHSA-2026:1690HighCVSS 7.8

Red Hat Security Advisory: kernel security update

Published
February 2, 2026
Last Modified
July 30, 2026

🔗 CVE IDs covered (19)

CVE-2025-40318 →CVE-2025-38568 →CVE-2025-40135 →CVE-2025-40158 →CVE-2025-40248 →CVE-2025-40294 →CVE-2025-40301 →CVE-2025-37819 →CVE-2025-38022 →CVE-2025-38731 →CVE-2025-40170 →CVE-2025-40258 →CVE-2025-40271 →CVE-2025-68305 →CVE-2025-38349 →CVE-2025-40251 →CVE-2025-68301 →CVE-2025-38453 →CVE-2025-40154 →

📋 Description

CVE-2025-37819 — kernel: Linux kernel: irqchip/gic-v2m use-after-free vulnerability CVE-2025-38022 — kernel: RDMA/core: Fix "KASAN: slab-use-after-free Read in ib_register_device" problem CVE-2025-38349 — kernel: Linux kernel use-after-free in eventpoll CVE-2025-38453 — kernel: io_uring/msg_ring: ensure io_kiocb freeing is deferred for RCU CVE-2025-38568 — kernel: net/sched: mqprio: fix stack out-of-bounds write in tc entry parsing CVE-2025-38731 — kernel: drm/xe: Fix vm_bind_ioctl double free bug CVE-2025-40135 — kernel: ipv6: use RCU in ip6_xmit() CVE-2025-40154 — kernel: ASoC: Intel: bytcr_rt5640: Fix invalid quirk input mapping CVE-2025-40158 — kernel: ipv6: use RCU in ip6_output() CVE-2025-40170 — kernel: net: use dst_dev_rcu() in sk_setup_caps() CVE-2025-40248 — kernel: Linux kernel: vsock vulnerability may lead to memory corruption CVE-2025-40251 — kernel: devlink: rate: Unset parent pointer in devl_rate_nodes_destroy CVE-2025-40258 — kernel: mptcp: fix race condition in mptcp_schedule_work() CVE-2025-40271 — kernel: Linux kernel: Use-after-free in proc_readdir_de() can lead to privilege escalation or denial of service. CVE-2025-40294 — kernel: Linux kernel: Out-of-bounds write in Bluetooth MGMT can lead to information disclosure and denial of service CVE-2025-40301 — kernel: Linux kernel: Information disclosure and denial of service in Bluetooth HCI event handling CVE-2025-40318 — kernel: Bluetooth: hci_sync: fix race in hci_cmd_sync_dequeue_once CVE-2025-68301 — kernel: net: atlantic: fix fragment overflow handling in RX path CVE-2025-68305 — kernel: Bluetooth: hci_sock: Prevent race in socket write iter and sock bind

🎯 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-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.31.1.el10_1.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.31.1.el10_1.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.31.1.el10_1.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-124.31.1.el10_1.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-core-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-core-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-debug-devel-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-devel-matched-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-modules-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-core-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-extra-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-devel-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-devel-matched-0:6.12.0-124.31.1.el10_1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-modules-0:6.12.0-124.31.1.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: To mitigate this issue, prevent module snd-soc-core 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: If enabled, you may disable MPTCP support. For more information please read https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/configuring_and_managing_networking/getting-started-with-multipath-tcp_configuring-and-managing-networking#preparing-rhel-to-enable-mptcp-support_getting-started-with-multipath-tcp 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, the `bluetooth` kernel module can be prevented from loading. Create a file `/etc/modprobe.d/disable-bluetooth.conf` with the content `blacklist bluetooth`. Then, regenerate the initramfs using `dracut -f -v` and reboot the system for the changes to take effect. This mitigation will disable all Bluetooth functionality on the system. Workaround: To mitigate this issue, disable the Bluetooth kernel module if Bluetooth functionality is not required. This can be achieved by blacklisting the `bluetooth` module. Create a file named `/etc/modprobe.d/disable-bluetooth.conf` with the following content: `blacklist bluetooth`. A system reboot is required for this change to take effect. Disabling Bluetooth may impact functionality that relies on Bluetooth connectivity. Workaround: To mitigate this issue, prevent the atlantic module from being loaded. See https://access.redhat.com/solutions/41278 for instructions.

🔗 References (22)