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THREAT OPS › Threat News › [NVD] CVE-2026-64387 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query directory replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_init() fails before the next send, cleanup reta

[NVD] CVE-2026-64387 (CRITICAL 9.8) — In the Linux kernel, the following vulnerability has been resolved: smb: client: fix query directory replay double-free A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_init() fails before the next send, cleanup reta

lownvdPublished 2026-07-25

CVE-2026-64387 CVSS: 9.8 CRITICAL Published: 2026-07-25T10:17:22.020

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

smb: client: fix query directory replay double-free

A response-bearing attempt can return a replayable error and free its response buffer. If SMB2_query_directory_init() fails before the next send, cleanup retains the previous buffer type and frees that respon

Indicators of compromise

CVE-2026-64387cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-64387