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CVE-2026-64386 is a double-free vulnerability in the Linux kernel SMB client's query_info() replay handling. A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() then fails before the next send, cleanup retains the previous response-buffer type and frees the same buffer again. Stale response bookkeeping across attempts causes the invalid second free, potentially resulting in kernel memory corruption or a crash.
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21 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability referenced in a Red Hat Enterprise Linux kernel package advisory. Its technical cause, impact, and individual severity are not provided.
A double-free during query_info() replay in the Linux kernel SMB client.
A double-free vulnerability in the Linux kernel SMB client's query_info() replay handling. Stale response-buffer bookkeeping can cause an already freed buffer to be freed again when initialization of a subsequent attempt fails. The plugin identifies affected Google COS kernel packages and assigns a CVSS v3 base score of 9.8. Updating to version 19216.532.62 or later resolves the issue.
A vulnerability covered by the Miracle Linux kernel package update. Individual technical details and exploit availability are not specified.
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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.
Community discussion across Reddit, Mastodon, and other social sources.