CVE-2022-1789
MEDIUMCVSS 6.8/10EPSS 0.32%
Last modified
CVE-2022-1789 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.8 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
| Fedoraproject | Fedora | 36 |
| Redhat | Enterprise Linux | 9.0 |
| Debian | Debian Linux | 11.0 |
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://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://www.debian.org/security/2022/dsa-5161Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-1789?
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.
How severe is CVE-2022-1789?
CVE-2022-1789 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.
How do I fix CVE-2022-1789?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2022-1789?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST