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THREAT OPS › Threat News › [NVD] CVE-2026-64386 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() fails before the next send, cleanup retains the

[NVD] CVE-2026-64386 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query_info() replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() fails before the next send, cleanup retains the

lownvdPublished 2026-07-25

CVE-2026-64386 CVSS: 9.8 CRITICAL Published: 2026-07-25T10:17:21.917

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

smb: client: fix query_info() replay double-free

A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_info_init() fails before the next send, cleanup retains the previous buffer type and frees that response again

Indicators of compromise

CVE-2026-64386cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64386