CVE-2026-43133

HIGH EPSS 2.3%
Published May 6, 20261mo ago · Modified Jun 17, 20261w ago
7.9 CVSS 3.1
High
Find Similar
Published May 6, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.9
Exploitability
2.0
Impact
5.3
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability High

Threat Intelligence

EPSS Exploit Probability
2.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 6

VendorProductVersionRange
linuxlinux_kernel*≥5.13  –  <5.15.202
linuxlinux_kernel*≥5.16  –  <6.1.165
linuxlinux_kernel*≥6.2  –  <6.6.128
linuxlinux_kernel*≥6.7  –  <6.12.75
linuxlinux_kernel*≥6.13  –  <6.18.16
linuxlinux_kernel*≥6.19  –  <6.19.6

References 7

  • git.kernel.org https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/0004ecb798b30e90d7ebfe74efae2d9423315a64
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/10063e1251c1485034a018236080792ad083dcc5
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/127ccae2c185f62e6ecb4bf24f9cb307e9b9c619
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/3880e331b0b31d0d5d3702b124f6c93539cd478a
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/c3b7015000988ba35ecd5648f4b2283960f00543
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/d464cf1ed900d47c85393d40b00017b6adfc2e6c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fce2fd4a2ca05670a91015aacccf96a1c26268fd
    Patch