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Δ / VULNERABILITY RECORD

CVE-2026-31477.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSHIGH / 7.5No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Apr 29, 2026

Disclosure summary

ksmbd: fix memory leaks and NULL deref in smb2_lock()

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-Apr

Open original source · Updated Apr 29, 2026

ksmbd: fix memory leaks and NULL deref in smb2_lock()

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

Microsoft maximum product score: 7.5

VendorProduct / associationVersion / bounds
Microsoft update guidecbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0 (MSRC status code 3)

Original records & references

PUBLISHED 2026-04-22T21:08:32-04:00
MODIFIED 2026-04-29T21:46:51-04:00
INGESTED 2026-10-08T12:45:04-04:00