Vulnerability Description
With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.8 |
| Fedoraproject | Fedora | 34 |
| Redhat | Enterprise Linux | 9.0 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1832397Not Applicable
- https://francozappa.github.io/about-bias/Not Applicable
- https://kb.cert.org/vuls/id/647177/Not Applicable
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.debian.org/security/2022/dsa-5161Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1832397Not Applicable
- https://francozappa.github.io/about-bias/Not Applicable
- https://kb.cert.org/vuls/id/647177/Not Applicable
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.debian.org/security/2022/dsa-5161Third Party Advisory
FAQ
What is CVE-2022-1789?
CVE-2022-1789 is a vulnerability with a CVSS score of 6.8 (MEDIUM). With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dere...
How severe is CVE-2022-1789?
CVE-2022-1789 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-1789?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Fedoraproject Fedora, Redhat Enterprise Linux, Debian Debian Linux.