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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-48793

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 232f75d3b4b5456de6f0b671aa86345d62de1473 to < 74b426bea4f7e3b081add2b88d4fba16d3af7ab6affected
  • 232f75d3b4b5456de6f0b671aa86345d62de1473 to < 352193edda48e08e8824a7ece09aec830a603cfeaffected
  • 232f75d3b4b5456de6f0b671aa86345d62de1473 to < e1779c2714c3023e4629825762bcbc43a3b943dfaffected

Linux Linux

Default version status: affected

  • 5.13affected
  • 0 to < 5.13unaffected
  • 5.15.25 to ≤ 5.15.*unaffected
  • 5.16.11 to ≤ 5.16.*unaffected
  • 5.17 to ≤ *unaffected

References