Kernel-level use-after-free in virtio_vsock can enable host/guest kernel compromise; affects widely deployed virtualization stacks and could disrupt infrastructure.
CVE-2026-80932
Linux kernel virtio_vsock use-after-free enabling potential kernel RCE
Is CVE-2026-80932 being exploited?
Not confirmed. CVE-2026-80932 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-80932?
CVE-2026-80932 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-80932?
Yes. A fix has been recorded for CVE-2026-80932. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-80932 affect?
CVE-2026-80932 affects Linux kernel (virtio_vsock), KVM/QEMU hypervisors, Virtual machines using virtio-vsock. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-80932?
Apply updated kernel/release from vendor and reboot hosts/VMs; isolate untrusted VMs until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Use-after-free in virtio_vsock workqueue can cause kernel memory corruption, crashes or remote code execution via crafted virtio queues (guest↔host).
Immediate action required
- affected>= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 and < 2187a56f2fd1715d54daed6392809223c60544f3
- affected>= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 and < 165a330a68b5f299d8735f0194c314cb2e571269
- affected>= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 and < da5e9f08714c19ba04e6863aca69d40f042f2e04
- affected>= 0ea9e1d3a9e3ef7d2a1462d3de6b95131dc7d872 and < 728836ebca239810f164262b10211ef59182f811
- affected4.8
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.