CVE-2022-48793
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedJul 16, 2024
First seenJul 16, 2024
How to fix
Update
- linux linux_kernel5.15.25, 5.16.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.13 ≤ v < 5.15.25, 5.16 ≤ v < 5.16.11 | 5.15.25, 5.16.11 |
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