NULL Pointer Dereference Affecting kernel-rt-selftests-internal package, versions *
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTSELFTESTSINTERNAL-7503330
- published 17 Jul 2024
- disclosed 16 Jul 2024
Introduced: 16 Jul 2024
CVE-2022-48793 Open this link in a new tabHow to fix?
There is no fixed version for Centos:8 kernel-rt-selftests-internal.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-selftests-internal package and not the kernel-rt-selftests-internal package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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.