5.5

CVE-2026-46071: linux

CVSS: 5.5v3.1MediumUndergoing analysis
AliasesUBUNTU-CVE-2026-46071DEBIAN-CVE-2026-46071CGA-26r2-7j68-rcf5
Published 27-05-2026Last modified 21-10-2026
Open JSON

Vulnerability summary

CVE-2026-46071 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.8% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 19 · Related 19
OPENSUSE-SU-2026:10954-1OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1SUSE-SU-2026:22666-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.
  2. 21-10-2026
    Last modifiedVulnerability information updated.

Description

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().

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu134 products
  • linuxAll versions (No fix recorded) | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard5 products
  • linux-aws-6.12All versions (No fix recorded)
  • linux-azure-6.12All versions (No fix recorded)
  • linux-gcp-6.12All versions (No fix recorded)
  • linux-qemu-6.12All versions (No fix recorded)
  • linux-vmware-6.12All versions (No fix recorded)
Linux2 products
  • linux≥ d20c796ca3709801f8a7fa36e8770a3dd8ebd34e, < 165b08d2d1346dce5ed43db65e10f3194b9ae2fe | ≥ d20c796ca3709801f8a7fa36e8770a3dd8ebd34e, < 11d347b7edf5093d69aca72317300798a32bfd6b | ≥ d20c796ca3709801f8a7fa36e8770a3dd8ebd34e, < a3f0981a5a0e0bd51ad74cc7d9eed32294b24002 | ≥ d20c796ca3709801f8a7fa36e8770a3dd8ebd34e, < 9efe23568806d1cd06f7d146f9b3037b8d585a9f | ≥ d20c796ca3709801f8a7fa36e8770a3dd8ebd34e, < b53ab5167a81537777ac780bbd93d32613aa3bda | 5.19
  • linux_kernel≥ 5.19, < 6.18.27 | ≥ 6.19, < 7.0.4
Debian1 product
  • linuxAll versions (No fix recorded) | < 7.0.4-1

4 vendors · 142 products

References

15 links
Show all 15 references