CVE-2026-43133 | 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 mi
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.
- 🔗 git.kernel.org/stable/c/10063e1251c1485034a018236080792a…
- 🔗 git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b22839…
- 🔗 git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c935…
- 🔗 git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1…
- 🔗 git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6…
- 🔗 git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d94…
- 🔗 git.kernel.org/stable/c/127ccae2c185f62e6ecb4bf24f9cb307…
- 🔗 access.redhat.com/security/cve/CVE-2026-43133
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CVE-2026-43133 | 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 mi
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 vmcb0