CVEvulnerability

CVE-2022-48793

5.5 MEDIUM Published 2024-07-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2024-07-16
Last modified
2026-06-17
Assigner
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

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 configurations

• linux linux kernel (>= 5.13 < 5.15.25) • linux linux kernel (>= 5.16 < 5.16.11)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References