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THREAT OPS › Threat News › [NVD] CVE-2026-64390 (HIGH 8.8) — In the Linux kernel, the following vulnerability has been resolved: ksmbd: track the connection owning a byte-range lock SMB2_LOCK adds each granted byte-range lock to both the file lock list and the lock list of the connection which handled the request. The final close and du

[NVD] CVE-2026-64390 (HIGH 8.8) — In the Linux kernel, the following vulnerability has been resolved: ksmbd: track the connection owning a byte-range lock SMB2_LOCK adds each granted byte-range lock to both the file lock list and the lock list of the connection which handled the request. The final close and du

lownvdPublished 2026-07-25

CVE-2026-64390 CVSS: 8.8 HIGH Published: 2026-07-25T10:17:22.330

In the Linux kernel, the following vulnerability has been resolved:

ksmbd: track the connection owning a byte-range lock

SMB2_LOCK adds each granted byte-range lock to both the file lock list and the lock list of the connection which handled the request. The final close and durable handle paths, however, remove the connection lis

Indicators of compromise

CVE-2026-64390cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64390