High severity8.8NVD Advisory· Published Aug 4, 2026· Updated Oct 19, 2026
CVE-2026-64562
CVE-2026-64562
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: nVMX: Hide shadow VMCS right after VMCLEAR
free_nested() frees the shadow VMCS while vmcs01 still points to it. But because it is asynchronous with respect to loaded_vmcs_clear(), the vCPU might migrate before the pointer is cleared and __loaded_vmcs_clear() may then execute VMCLEAR.
The VMCS needs to stay attached until its explicit VMCLEAR completes, but then it can be hidden and the page safely freed.
Affected products
16- osv-coords15 versionspkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0pkg:linux/kernelpkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0
< 6.12.0-160000.38.1+ 14 more
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: >= 4.9.0, < 5.10.265
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 7.1.7-1.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1.160000.2.22
- (no CPE)range: < 6.12.0-160000.38.1
- (no CPE)range: < 6.12.0-160000.38.1
Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695dnvd
- git.kernel.org/stable/c/4f50e6aec16f69627dbad5704d1e90a255d766a7nvd
- git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946nvd
- git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3nvd
- git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3nvd
- git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412nvd
- git.kernel.org/stable/c/b82c3144d8264265448292ca406f60bafeba3b6fnvd
- git.kernel.org/stable/c/dc3eecfa219ebc9d01eaf7d1abd1441efe884dabnvd
News mentions
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