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.

INFO

Published Date :

2026-05-06T11:27:20.882Z

Last Modified :

2026-05-08T12:40:48.030Z

Source :

Linux
AFFECTED PRODUCTS

The following products are affected by CVE-2026-43133 vulnerability.

Vendors Products
Linux
  • Linux Kernel
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-43133.

URL Resource
https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64 cve-icon cve-icon
https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5 cve-icon cve-icon
https://git.kernel.org/stable/c/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619 cve-icon cve-icon
https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a cve-icon cve-icon
https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543 cve-icon cve-icon
https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c cve-icon cve-icon
https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2026050622-CVE-2026-43133-ffea@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-43133 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-43133 cve-icon
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