HIGH🇵🇱 Wersja polska

CVE-2026-43133

CVSS 7.9pub. 2026-05-06upd. 2026-06-30

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.

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

  • Linux Kernel

    OS
    Linux
    5.13 – 5.15.202 (bez)5.16 – 6.1.165 (bez)6.2 – 6.6.128 (bez)6.7 – 6.12.75 (bez)6.13 – 6.18.16 (bez)6.19 – 6.19.6 (bez)
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CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References

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