KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Linux | Linux | unaffected |
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| Linux | Linux | affected |
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No data.
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| Linux | Linux Kernel |
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| Linux | Linux Kernel |
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| Source | ID | Title |
|---|---|---|
Debian DLA |
DLA-4904-1 | linux-6.12 security update |
Ubuntu USN |
USN-8488-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8489-1 | Linux kernel (OEM) vulnerabilities |
Ubuntu USN |
USN-8488-2 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-8507-1 | Linux kernel (NVIDIA) vulnerabilities |
Ubuntu USN |
USN-8569-1 | Linux kernel (HWE) vulnerabilities |
Ubuntu USN |
USN-8603-1 | Linux kernel (Azure) vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.130% probability within 30 days)
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ssvc
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| Weaknesses | NVD-CWE-noinfo | |
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cvssV3_1
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cvssV3_1
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| Weaknesses | CWE-390 |
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| Weaknesses | CWE-248 | |
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threat_severity
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cvssV3_1
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| Weaknesses | CWE-390 |
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| Description | In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT If loading L1's CR3 fails on a nested #VMEXIT, nested_svm_vmexit() returns an error code that is ignored by most callers, and continues to run L1 with corrupted state. A sane recovery is not possible in this case, and HW behavior is to cause a shutdown. Inject a triple fault instead, and do not return early from nested_svm_vmexit(). Continue cleaning up the vCPU state (e.g. clear pending exceptions), to handle the failure as gracefully as possible. From the APM: Upon #VMEXIT, the processor performs the following actions in order to return to the host execution context: ... if (illegal host state loaded, or exception while loading host state) shutdown else execute first host instruction following the VMRUN Remove the return value of nested_svm_vmexit(), which is mostly unchecked anyway. | |
| Title | KVM: nSVM: Triple fault if restore host CR3 fails on nested #VMEXIT | |
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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