Vulnerability Description
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 nested_svm_load_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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.13, < 5.15.25 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/352193edda48e08e8824a7ece09aec830a603cfePatch
- https://git.kernel.org/stable/c/74b426bea4f7e3b081add2b88d4fba16d3af7ab6Patch
- https://git.kernel.org/stable/c/e1779c2714c3023e4629825762bcbc43a3b943dfPatch
- https://git.kernel.org/stable/c/352193edda48e08e8824a7ece09aec830a603cfePatch
- https://git.kernel.org/stable/c/74b426bea4f7e3b081add2b88d4fba16d3af7ab6Patch
- https://git.kernel.org/stable/c/e1779c2714c3023e4629825762bcbc43a3b943dfPatch
FAQ
What is CVE-2022-48793?
CVE-2022-48793 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 accidenta...
How severe is CVE-2022-48793?
CVE-2022-48793 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-48793?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.