KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.12.110, 6.18.51, 7.2.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Ensure KVM_REQ_GET_NESTED_STATE_PAGES is cleared on VM-Exit Always check and clear KVM_REQ_GET_NESTED_STATE_PAGES when emulating a nested VM-Exit to ensure the request is cleared, even when KVM was built with CONFIG_KVM_HYPERV=n, as KVM subtly relies on the "check" to clear the flag and thus avoid double-mapping the vmcs12 pages, e.g. if KVM manages to bail from VM-Enter without processing the request, and then emulates VMLAUNCH or VMRESUME.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 · fixed in ae190f2439ca30067927077bf570d4c5edf07a0f; From b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 · fixed in 674a3244f07f323f21a106a7bdcaebb6db6a5058; From b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 · fixed in bbec4adc2f340d85f4a77a9ddcddaa6b1f4639c5; From b4f69df0f65e97fec439130a0d0a8b9c7cc02df2 · fixed in 11722439fb206c88e6f31be54173efa9880b4ccb
- Linux Linux
6.8
- KernelLinux
From 6.8.0 · fixed in 6.12.110; From 6.13.0 · fixed in 6.18.51; From 6.19.0 · fixed in 7.2.5