--- title: "Januscape vulnerability CVE-2026-53359 mitigations available" url: https://daily.dev/posts/januscape-vulnerability-cve-2026-53359-mitigations-available-e9giiytfe source_url: https://ubuntu.com/blog/januscape-linux-vulnerability-mitigations-available type: article source: "Ubuntu" published: 2026-07-12T13:26:55.350Z updated: 2026-07-12T13:27:18.113Z tags: ["security", "linux", "infrastructure", "ubuntu"] reading_time: 4 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Januscape vulnerability CVE-2026-53359 mitigations available **[Ubuntu](https://daily.dev/sources/ubuntu)** · 4 min read · 0 upvotes · 0 comments ## Summary A local privilege escalation and VM escape vulnerability (CVE-2026-53359, dubbed Januscape) was disclosed on July 6, 2026, affecting the Linux kernel's KVM nested virtualization on Intel and AMD x86_64 systems. All Ubuntu releases are impacted. A proof-of-concept exploit exists that can crash a hypervisor host from a guest. Kernel patches are pending; in the meantime, the recommended mitigation is to disable nested virtualization by unloading the kvm_amd and kvm_intel modules and setting nested=0 in /etc/modprobe.d/. Cloud tenants using KVM-based providers with nested virtualization enabled are at risk from other tenants. Deployments without VMs may still be exposed via services like libvirt, lxd, or multipass if unprivileged users can access /dev/kvm. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [New Linux kernel flaw allows VM escape on Intel, AMD devices](https://daily.dev/posts/new-linux-kernel-flaw-allows-vm-escape-on-intel-amd-devices-pgteqqq1i) · BleepingComputer · 2 upvotes · 0 comments - [16-year-old KVM flaw allows attackers to escape VMs and take over Linux servers](https://daily.dev/posts/16-year-old-kvm-flaw-allows-attackers-to-escape-vms-and-take-over-linux-servers-gx1scspvh) · CSO Online · 0 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#linux](https://daily.dev/tags/linux), [#infrastructure](https://daily.dev/tags/infrastructure), [#ubuntu](https://daily.dev/tags/ubuntu) [View this post on daily.dev](https://daily.dev/posts/januscape-vulnerability-cve-2026-53359-mitigations-available-e9giiytfe)