Red Hat Security Advisory: kernel-rt security update
🔗 CVE IDs covered (2)
📋 Description
CVE-2022-50228 — kernel: KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 CVE-2023-53305 — kernel: Bluetooth: L2CAP: Fix use-after-free
🎯 Affected products32
- Red Hat Enterprise Linux NFV (v. 8)
- Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-0:4.18.0-553.79.1.rt7.420.el8_10.src as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-0:4.18.0-553.79.1.rt7.420.el8_10.src as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-core-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-core-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debug-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debug-core-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-core-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debug-debuginfo-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-debuginfo-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debug-devel-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-devel-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debug-kvm-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-modules-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-modules-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debug-modules-extra-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debug-modules-extra-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debuginfo-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debuginfo-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-debuginfo-common-x86_64-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-devel-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-devel-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- kernel-rt-kvm-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-modules-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux NFV (v. 8)
- kernel-rt-modules-0:4.18.0-553.79.1.rt7.420.el8_10.x86_64 as a component of Red Hat Enterprise Linux RT (v. 8)
- +2 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: To mitigate these vulnerabilities on the operating system level, disable the Bluetooth functionality via blocklisting kernel modules in the Linux kernel. The kernel modules can be prevented from being loaded by using system-wide modprobe rules. Instructions on how to disable Bluetooth modules are available on the customer portal at https://access.redhat.com/solutions/2682931. Alternatively, bluetooth can be disabled within the hardware or at the BIOS level, which will also provide effective mitigation as the kernel will not detect Bluetooth hardware on the system.
🔗 References (5)
- selfhttps://access.redhat.com/errata/RHSA-2025:17812
- externalhttps://access.redhat.com/security/updates/classification/#moderate
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2373529
- externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2395858
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_17812.json