CVE-2026-46071
In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12 svm_copy_lbrs() always marks VMCB_LBR dirty in the destination VMCB. However, nested_svm_vmexit() uses it to copy LBRs to vmcb12, and clearing clean bits in vmcb12 is not architecturally defined. Move vmcb_mark_dirty() to callers and drop it for vmcb12. This also facilitates incoming refactoring that does not pass the entire VMCB to svm_copy_lbrs().
Affected versions
Linux kernel versions
5.19
and later are affected. Fixed in
6.18.27,
7.0.4,
7.1-rc1
and their respective stable series.
References
The following references provide additional information about CVE-2026-46071 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/9efe23568806d1cd06f7d146f9b3037b8d585a9f
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PatchKernel patch commithttps://git.kernel.org/stable/c/a3f0981a5a0e0bd51ad74cc7d9eed32294b24002
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PatchKernel patch commithttps://git.kernel.org/stable/c/b53ab5167a81537777ac780bbd93d32613aa3bda
Frequently asked questions
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What is CVE-2026-46071?
CVE-2026-46071 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.19 onward and has been patched in 6.18.27, 7.0.4 and 7.1-rc1. CVE-2026-46071 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-46071?
Yes — CVE-2026-46071 has been patched. Fixed versions include 6.18.27, 7.0.4 and 7.1-rc1. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-46071 actively exploited?
No — CVE-2026-46071 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.