Answer in brief
CVE-2026-46071 records a Medium severity (CVSS 5.5) vulnerability in KVM: nSVM: Avoid clearing VMCB_LBR in vmcb12. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <9efe23568806d1cd06f7d146f9b3037b8d585a9f || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <b53ab5167a81537777ac780bbd93d32613aa3bda | a3f0981a5a0e0bd51ad74cc7d9eed32294b24002, 9efe23568806d1cd06f7d146f9b3037b8d585a9f, b53ab5167a81537777ac780bbd93d32613aa3bda |
| Linux/Linuxgeneric | 5.19 | Not reported |
| Linux/Linuxgeneric | >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <165b08d2d1346dce5ed43db65e10f3194b9ae2fe || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <11d347b7edf5093d69aca72317300798a32bfd6b || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <9efe23568806d1cd06f7d146f9b3037b8d585a9f || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <b53ab5167a81537777ac780bbd93d32613aa3bda | 165b08d2d1346dce5ed43db65e10f3194b9ae2fe, 11d347b7edf5093d69aca72317300798a32bfd6b, a3f0981a5a0e0bd51ad74cc7d9eed32294b24002, 9efe23568806d1cd06f7d146f9b3037b8d585a9f, b53ab5167a81537777ac780bbd93d32613aa3bda |
| Linux/Linuxgeneric | >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <b7fefb393a926bdfe445c63b4091185ed7da2733 || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <165b08d2d1346dce5ed43db65e10f3194b9ae2fe || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <11d347b7edf5093d69aca72317300798a32bfd6b || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <9efe23568806d1cd06f7d146f9b3037b8d585a9f || >=d20c796ca3709801f8a7fa36e8770a3dd8ebd34e <b53ab5167a81537777ac780bbd93d32613aa3bda | b7fefb393a926bdfe445c63b4091185ed7da2733, 165b08d2d1346dce5ed43db65e10f3194b9ae2fe, 11d347b7edf5093d69aca72317300798a32bfd6b, a3f0981a5a0e0bd51ad74cc7d9eed32294b24002, 9efe23568806d1cd06f7d146f9b3037b8d585a9f, b53ab5167a81537777ac780bbd93d32613aa3bda |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 24, 2026
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().
Quoted source text, attributed separately from HOL analysis.