MEDIUM 4.7 Microsoft

CVE-2025-40039

ksmbd: Fix race condition in RPC handle list access

Microsoft Security Update 2025-Oct: ksmbd: Fix race condition in RPC handle list access

Affected Products

cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0
cbl2 kernel 5.15.202.1-1
cbl2 kernel 5.15.186.1-1 on CBL Mariner 2.0

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-40039
https://nvd.nist.gov/vuln/detail/CVE-2025-40039

Published: 2025-10-14 · Source: Microsoft · Feed updated: 2026-09-24

This medium severity vulnerability with a CVSS score of 4.7 was published on 2025-10-14 via Microsoft. Affected: cbl2 kernel 5.15.200.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1 on CBL Mariner 2.0, cbl2 kernel 5.15.202.1-1 and 1 more.

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