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Δ / VULNERABILITY RECORD

CVE-2025-39749.

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

rcu: Protect ->defer_qs_iw_pending from data race

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

rcu: Protect ->defer_qs_iw_pending from data race

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 6.6.96.2-2 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 2025-09-12T21:02:13-04:00
MODIFIED 2026-02-24T09:38:23-05:00
INGESTED 2026-10-08T12:45:41-04:00