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CVE-2026-64382 is a double-free vulnerability in the Linux kernel SMB client's SMB2_open() replay handling. A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_open_init() then fails before the next send, cleanup retains the previous buffer type and frees the same response buffer again. The defect can potentially cause kernel memory corruption or denial of service. The fix resets response bookkeeping before each attempt.
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A double-free during SMB2_open() replay in the Linux kernel SMB client.
A double-free vulnerability in the Linux kernel SMB client during SMB2_open() replay handling. Stale response-buffer bookkeeping can cause cleanup to free an already-freed buffer when initialization fails before a subsequent send. The fix resets response bookkeeping before each attempt. The advisory assigns a CVSS v3 base score of 8.8 (High).
A vulnerability covered by the Miracle Linux kernel package update. Individual technical details and exploit availability are not specified.
A double-free vulnerability in the Linux kernel SMB client during SMB2_open() replay. Stale response-buffer bookkeeping can cause cleanup to free an already-freed buffer when initialization fails before a retry. The plugin reports a CVSS v3 base score of 8.8 (High). A security update fixes the issue by resetting response bookkeeping before each attempt; affected Google COS kernel packages should be updated to version 18867.528.43 or later.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
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