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In the Linux kernel, the following vulnerability has been resolved:
x86/kvm: Disable kvmclock on all CPUs on shutdown
Currenly, we disable kvmclock from machine_shutdown() hook and this only happens for boot CPU. We need to disable it for all CPUs to guard against memory corruption e.g. on restore from hibernate.
Note, writing '0' to kvmclock MSR doesn't clear memory location, it just prevents hypervisor from updating the location so for the short while after write and while CPU is still alive, the clock remains usable and correct so we don't need to switch to some other clocksource.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade python-perf-debuginfoUpgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-toolsUpgrade kernel-livepatch-4.14.348-265.565Upgrade kernel-develUpgrade kernelUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade bpftoolUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfo | May 28, 2024 | Mar 15, 2024 |
| Amazon_linux | — | Upgrade kernel | Jun 24, 2024 | Mar 15, 2024 |
| Debian | — | Upgrade linux | Jul 30, 2024 | Mar 15, 2024 |
| Huawei Euleros 2_0_sp10 | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-libsUpgrade kernel-abi-stablelists | May 13, 2024 | Mar 15, 2024 |
| Huawei Euleros 2_0_sp9 | — | Upgrade kernel-toolsUpgrade python3-perfUpgrade kernelUpgrade kernel-tools-libs | Jul 17, 2024 | Mar 15, 2024 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Mar 15, 2024 |
| Suse | — | Upgrade kernel-docsUpgrade kernel-default-baseUpgrade kernel-azure-baseUpgrade kernel-preempt-develUpgrade kernel-64kbUpgrade reiserfs-kmp-defaultUpgrade kernel-defaultUpgrade kernel-default-develUpgrade kernel-symsUpgrade kernel-develUpgrade kernel-64kb-develUpgrade kernel-azureUpgrade kernel-syms-azureUpgrade kernel-default-extraUpgrade kernel-source-azureUpgrade kernel-azure-develUpgrade kernel-sourceUpgrade kernel-preemptUpgrade kernel-obs-buildUpgrade kernel-devel-azureUpgrade kernel-macrosUpgrade kernel-zfcpdumpUpgrade kernel-default-man | Aug 9, 2024 | Mar 15, 2024 |
| Ubuntu | — | Upgrade linux-hwe-5.4Upgrade linux-azureUpgrade linux-aws-5.4Upgrade linux-kvmUpgrade linux-azure-fipsUpgrade linux-fipsUpgrade linux-raspiUpgrade linux-gkeopUpgrade linuxUpgrade linux-gcp-5.4Upgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-azure-fde-5.15Upgrade linux-oracle-5.4Upgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-gcp-fipsUpgrade linux-bluefieldUpgrade linux-azure-5.4Upgrade linux-gcp | Nov 19, 2024 | Mar 15, 2024 |
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