RHSA-2026:97435HighCVSS 7.8

Red Hat Security Advisory: kernel security, bug fix, and enhancement update

Published
November 10, 2026
Last Modified
November 11, 2026

🔗 CVE IDs covered (18)

CVE-2026-53075 →CVE-2026-64109 →CVE-2026-64279 →CVE-2026-64375 →CVE-2026-80864 →CVE-2026-23066 →CVE-2026-23239 →CVE-2026-23240 →CVE-2026-64027 →CVE-2026-68181 →CVE-2026-68398 →CVE-2026-80863 →CVE-2026-46099 →CVE-2026-52945 →CVE-2026-63914 →CVE-2026-64000 →CVE-2026-64355 →CVE-2026-68103 →

📋 Description

CVE-2026-23066 — kernel: Linux kernel: Denial of Service via unsafe requeue in rxrpc_recvmsg CVE-2026-23239 — kernel: Kernel: Race condition in espintcp can lead to denial of service CVE-2026-23240 — kernel: Linux kernel: Denial of service due to a race condition in the TLS subsystem CVE-2026-46099 — kernel: net: ipv6: fix NOREF dst use in seg6 and rpl lwtunnels CVE-2026-52945 — kernel: Revert "wireguard: device: enable threaded NAPI" CVE-2026-53075 — kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls CVE-2026-63914 — kernel: xfrm: route MIGRATE notifications to caller's netns CVE-2026-64000 — kernel: net: hsr: fix potential OOB access in supervision frame handling CVE-2026-64027 — kernel: net: shaper: rework the VALID marking (again) CVE-2026-64109 — kernel: af_unix: Fix UAF read of tail->len in unix_stream_data_wait() CVE-2026-64279 — kernel: i2c: core: fix adapter deregistration race CVE-2026-64355 — kernel: bpf: Reject fragmented frames in devmap CVE-2026-64375 — kernel: proc: protect ptrace_may_access() with exec_update_lock (FD links) CVE-2026-68103 — kernel: drm/amdgpu: reject mapping a reserved doorbell to a new queue CVE-2026-68181 — kernel: mei: bus: access mei_device under device_lock on cleanup CVE-2026-68398 — kernel: Linux kernel: PPP over L2TP Use-After-Free vulnerability CVE-2026-80863 — kernel: RDMA/rxe: Fix OOB in free_rd_atomic_resources() CVE-2026-80864 — kernel: RDMA/rxe: Fix responder UAF on IB_QP_MAX_DEST_RD_ATOMIC modify_qp

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux BaseOS (v. 9)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • Red Hat Enterprise Linux Real Time (v. 9)
  • Red Hat Enterprise Linux Real Time for NFV (v. 9)
  • kernel-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-0:5.14.0-741.14.1.el9_9.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-0:5.14.0-741.14.1.el9_9.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-0:5.14.0-741.14.1.el9_9.src as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-0:5.14.0-741.14.1.el9_9.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-core-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debug-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debug-core-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debug-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • kernel-64k-debug-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debug-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • kernel-64k-debug-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 9)
  • kernel-64k-debug-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 9)
  • kernel-64k-debug-devel-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • kernel-64k-debug-devel-matched-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • kernel-64k-debug-modules-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debug-modules-core-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debug-modules-extra-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • kernel-64k-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • kernel-64k-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • kernel-64k-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 9)
  • kernel-64k-debuginfo-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 9)
  • kernel-64k-devel-0:5.14.0-741.14.1.el9_9.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • +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. Red Hat recommends treating all kernel errata as security-relevant. Given the kernel's fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers' overall security posture. Because of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat's CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available. 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 don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. 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: If PPP over L2TP functionality is not required, prevent the 'pppol2tp' kernel module from loading to mitigate this vulnerability. Create a file named `/etc/modprobe.d/disable-pppol2tp.conf` with the following content: ``` install pppol2tp /bin/true ``` After creating the file, regenerate the initramfs and reboot the system for the changes to take effect. This action may impact services relying on PPP over L2TP. Workaround: To mitigate this issue, prevent module rdma_rxe 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 rdma_rxe kernel module from being loaded. 1. Create a configuration file in /etc/modprobe.d to disable loading of the module: # echo "install rdma_rxe /bin/true" > /etc/modprobe.d/disable-rdma_rxe.conf 2. If the module is currently loaded, attempt to unload it: # modprobe -r rdma_rxe Caveats: Disabling this module prevents the creation and operation of software RDMA over Converged Ethernet (Soft-RoCE) devices. Applications requiring rdma_rxe will fail to initialize. If the module is currently in active use and cannot be unloaded dynamically, a system reboot is required to ensure the module is fully disabled.

🔗 References (29)