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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < b82c3144d8264265448292ca406f60bafeba3b6faffected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < 4f50e6aec16f69627dbad5704d1e90a255d766a7affected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < dc3eecfa219ebc9d01eaf7d1abd1441efe884dabaffected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < af56298e9d86e6098cd1d2e155cb2949b7c45412affected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < 589419470030a89f16cf19300658b6dc644ca946affected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < 8001d2ce9d9bd09118ce523aef595aa094573ae3affected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < 1dabef6e206568bf9d9ade74f6e56a48ea35695daffected355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 to < 622ebfac01ba4f9c0060cebd41257fe46fc4a0b3affected
Linux Linux
Default version status: affected
4.9affected0 to < 4.9unaffected5.10.265 to ≤ 5.10.*unaffected5.15.216 to ≤ 5.15.*unaffected6.1.183 to ≤ 6.1.*unaffected6.6.148 to ≤ 6.6.*unaffected6.12.101 to ≤ 6.12.*unaffected6.18.42 to ≤ 6.18.*unaffected7.1.6 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/b82c3144d8264265448292ca406f60bafeba3b6f ↗
- https://git.kernel.org/stable/c/4f50e6aec16f69627dbad5704d1e90a255d766a7 ↗
- https://git.kernel.org/stable/c/dc3eecfa219ebc9d01eaf7d1abd1441efe884dab ↗
- https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412 ↗
- https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946 ↗
- https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3 ↗
- https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d ↗
- https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 ↗