CVE-2026-43133
Published: May 6, 2026
Modified: May 11, 2026
CVSS v3.1
7.9
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.
| Vendor | Product | Versions |
|---|---|---|
Linux | Linux | affected cc3ed80ae69f454c3d904af9f65394a540099723 - < 10063e1251c1485034a018236080792ad083dcc5affected cc3ed80ae69f454c3d904af9f65394a540099723 - < c3b7015000988ba35ecd5648f4b2283960f00543affected cc3ed80ae69f454c3d904af9f65394a540099723 - < 3880e331b0b31d0d5d3702b124f6c93539cd478aaffected cc3ed80ae69f454c3d904af9f65394a540099723 - < fce2fd4a2ca05670a91015aacccf96a1c26268fdaffected cc3ed80ae69f454c3d904af9f65394a540099723 - < d464cf1ed900d47c85393d40b00017b6adfc2e6c+2 more versions |
Linux | Linux | affected 5.13unaffected 0 - < 5.13unaffected 5.15.202 - <= 5.15.*unaffected 6.1.165 - <= 6.1.*unaffected 6.6.128 - <= 6.6.*+4 more versions |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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