CVE-2022-1789
Medium
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.
SeverityMedium
CVSS6.8
Exploit probability—
Product
Linux Kernel
PublishedJun 2, 2022
First seenJun 2, 2022
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.8 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IBUOQTNTQ4ZCXHOCNKYIL2ZUIAZ675RD/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KCEAPIVPRTJHKPF2A2HVF5XHD5XJT3MN/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H6JP355XFVAB33X4BNO3ERVTURFYEDB7/
- debian.org/security/2022/dsa-5161
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | v < 5.8 | 5.8 |
| fedoraproject fedora | 34, 35, 36 | — |
| redhat enterprise_linux | 9.0 | — |
| debian debian_linux | 11.0 | — |
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