CVE-2022-48793

Source
https://nvd.nist.gov/vuln/detail/CVE-2022-48793
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-48793.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-48793
Downstream
Related
Published
2024-07-16T12:15:04Z
Modified
2025-08-09T19:01:29Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: nSVM: fix potential NULL derefernce on nested migration

Turns out that due to review feedback and/or rebases I accidentally moved the call to nestedsvmload_cr3 to be too early, before the NPT is enabled, which is very wrong to do.

KVM can't even access guest memory at that point as nested NPT is needed for that, and of course it won't initialize the walk_mmu, which is main issue the patch was addressing.

Fix this for real.

References

Affected packages