漏洞信息
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Vulnerability Title
KVM: x86: nSVM: fix potential NULL derefernce on nested migration
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 Information
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Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于KVM模块中发现潜在的空指针解引用问题。在嵌套迁移过程中，调用nested_svm_load_cr3过早。
CVSS Information
N/A
Vulnerability Type
N/A