What’s Vulnerable › Vulnerabilities

CVE-2022-1789

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-02 · updated 2026-06-17
• Weakness: CWE-476

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.

Affected products

• Debian Linux: 11.0
• Fedoraproject Fedora: 34, 35, 36
• Linux kernel: before 5.8 — fixed in 5.8
• Red Hat Enterprise Linux: 9.0

How to fix

Upgrade to a fixed version: Linux kernel 5.8. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1832397
• https://francozappa.github.io/about-bias/
• https://kb.cert.org/vuls/id/647177/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6JP355XFVAB33X4BNO3ERVTURFYEDB7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IBUOQTNTQ4ZCXHOCNKYIL2ZUIAZ675RD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KCEAPIVPRTJHKPF2A2HVF5XHD5XJT3MN/
• https://www.debian.org/security/2022/dsa-5161
• https://bugzilla.redhat.com/show_bug.cgi?id=1832397
• https://francozappa.github.io/about-bias/
• https://kb.cert.org/vuls/id/647177/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6JP355XFVAB33X4BNO3ERVTURFYEDB7/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IBUOQTNTQ4ZCXHOCNKYIL2ZUIAZ675RD/

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