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CVE-2026-43133 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Always use vmcb01 in VMLOAD/VMSAVE emulation Commit cc3ed80ae69f ("KVM: nSVM: always use vmcb01 to for vmsave/vmload of guest state") made KVM always use vmcb01 for the fields controlled by VMSAVE/VMLOAD, but it missed updating the VMLOAD/VMSAVE emulation code to always use vmcb01. As a result, if VMSAVE/VMLOAD is executed by an L2 guest and is not intercepted by L1, KVM will mistakenly use vmcb02. Always use vmcb01 instead of the current VMCB.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

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URL Source(s) Tag(s)
https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64 kernel.org
https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5 kernel.org
https://git.kernel.org/stable/c/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619 kernel.org
https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a kernel.org
https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543 kernel.org
https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c kernel.org
https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-43133
NVD Published Date:
05/06/2026
NVD Last Modified:
05/06/2026
Source:
kernel.org