{"cve":"CVE-2026-64387","nvd":{"published":"2026-07-25T10:17:22.020","modified":"2026-10-19T21:17:35.290","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix query directory replay double-free\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_query_directory_init() fails before the next send,\ncleanup retains the previous buffer type and frees that response again.\n\nReset response bookkeeping before each attempt to prevent the stale free.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-415"],"references":["https://git.kernel.org/stable/c/00b0fa425941438b664950a8ee65dfba2def4336","https://git.kernel.org/stable/c/1665f25b1dea30bf2d02e16245d203a944c9d994","https://git.kernel.org/stable/c/3317a5d015fca976475aa71df224056777316fde","https://git.kernel.org/stable/c/3409aedf3c81a810243da94164f6621c9d205c98","https://git.kernel.org/stable/c/9647492b5e41954be59d5157eddbcd4cdc1656f7"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-64387","score":0.00457,"percentile":0.3939,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}