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Δ / VULNERABILITY RECORD

CVE-2026-80634.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSLOW / 2.5No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Sep 23, 2026

Disclosure summary

netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untag

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) · 2026-Aug

Open original source · Updated Sep 23, 2026

netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untag

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

Microsoft maximum product score: 2.5

VendorProduct / associationVersion / bounds
Microsoft update guideazl3 kernel 6.6.150.1-1 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 kernel 6.6.152.1-1 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 kernel 6.6.157.1-1 on Azure Linux 3.0 (MSRC status code 3)

Vendor remediation references

  • Release Notes · product IDs 21892-17084, 21932-17084
  • Vendor guidance · product IDs 21892-17084, 21932-17084

Original records & references

PUBLISHED 2026-08-28T21:04:25-04:00
MODIFIED 2026-09-23T21:58:48-04:00
INGESTED 2026-10-08T12:40:22-04:00