RHSA-2026:72624HighCVSS 8.8

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

Published
September 28, 2026
Last Modified
September 30, 2026

🔗 CVE IDs covered (10)

CVE-2026-46317 →CVE-2026-53341 →CVE-2026-64556 →CVE-2026-74753 →CVE-2026-80522 →CVE-2026-45942 →CVE-2026-46076 →CVE-2026-68299 →CVE-2026-89480 →CVE-2026-89775 →

📋 Description

CVE-2026-45942 — kernel: ext4: fix e4b bitmap inconsistency reports CVE-2026-46076 — kernel: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 CVE-2026-46317 — kernel: KVM: arm64: Reassign nested_mmus array behind mmu_lock CVE-2026-53341 — kernel: fhandle: fix UAF due to unlocked ->mnt_ns read in may_decode_fh() CVE-2026-64556 — kernel: perf/core: Detach event groups during remove_on_exec CVE-2026-68299 — kernel: vmxnet3: fix BUG_ON in vmxnet3_get_hdr_len() for Geneve packets CVE-2026-74753 — kernel: perf: Reject exited events as group leaders CVE-2026-80522 — kernel: crypto: tegra - fix rctx->cryptlen calculation in tegra_gcm_do_one_req() CVE-2026-89480 — kernel: nvme-tcp: reject a read that transferred too few bytes CVE-2026-89775 — kernel: KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation

🎯 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-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.61.1.el10_2.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.61.1.el10_2.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.61.1.el10_2.src as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-0:6.12.0-211.61.1.el10_2.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-core-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-core-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debug-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-debug-devel-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-devel-matched-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debug-modules-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-core-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debug-modules-extra-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)
  • kernel-64k-debuginfo-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux Real Time (v. 10)
  • kernel-64k-devel-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-devel-matched-0:6.12.0-211.61.1.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10)
  • kernel-64k-modules-0:6.12.0-211.61.1.el10_2.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. 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: 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 prevent the `tegra_se_aes` crypto module from being loaded, blacklist it by creating a configuration file. Create `/etc/modprobe.d/blacklist-tegra.conf` with the content: ``` blacklist tegra_se_aes ``` Then, regenerate the initramfs and reboot the system for the changes to take effect: ```bash dracut -f -v $(uname -r) reboot ``` This action may affect system functionality if NVIDIA Tegra hardware and its cryptographic features are actively utilized. Workaround: Prevent the nvme-tcp kernel module from loading if NVMe-over-TCP storage connectivity is not required on the host: 1. Create a configuration file to blacklist the driver and prevent it from loading: # echo "install nvme-tcp /bin/true" > /etc/modprobe.d/nvme-tcp.conf # echo "blacklist nvme-tcp" >> /etc/modprobe.d/nvme-tcp.conf 2. If the module is currently loaded, unload it: # modprobe -r nvme-tcp Caveats: Applying this operational workaround disables all NVMe-over-TCP initiator functionality and prevents connections to NVMe-oF network storage fabrics. If the module is actively in use by mounted file systems or active block devices, it cannot be safely unloaded at runtime without first unmounting those targets, and a system reboot may be required to cleanly unload the driver.

🔗 References (13)