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Δ / VULNERABILITY RECORD

CVE-2025-39703.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Feb 24, 2026

Disclosure summary

net, hsr: reject HSR frame if skb can't hold tag

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2025-Sep

Open original source · Updated Feb 24, 2026

net, hsr: reject HSR frame if skb can't hold tag

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 7

VendorProduct / associationVersion / bounds
Microsoft update guideazl3 kernel 6.6.96.2-1 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 kernel 6.6.96.2-2 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guidecbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0 (MSRC status code 3)

Vendor remediation references

  • CBL-Mariner Releases · build 6.6.104.2-1 · product IDs 20412-17084
  • Vendor guidance · product IDs 20412-17084
  • CBL-Mariner Releases · build 5.15.200.1-1 · product IDs 17087-17086
  • Vendor guidance · product IDs 17087-17086

Original records & references

PUBLISHED 2025-09-06T21:01:27-04:00
MODIFIED 2026-02-24T09:46:14-05:00
INGESTED 2026-10-08T12:45:41-04:00