{"id":"CVE-2026-64386","revision":"2dd2e806fb094944b4f55057dd2bc909","records":[{"revision":"2dd2e806fb094944b4f55057dd2bc909","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64386","aliases":[],"title":"smb: client: fix query_info() replay double-free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix query_info() replay double-free\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_query_info_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.","state":0,"publishedAt":"2026-07-25T08:50:34.729+00:00","modifiedAt":"2026-10-19T20:38:26.574+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/smb/client/smb2pdu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"433042a91f9373241307725b52de573933ffedbf\",\n                            \"lessThan\": \"100fb7c455fa86d248b8bd7bb9de757c192870b4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"3c81dda84799f76b42aec598564316e2964440db\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"f1add4acb656f5a82806a1ab0e63fed3d8b1bfca\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"89234773e8348918111aa15f6922b58cf3843364\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"2a88561d66eb855813cf004a0abe648bbb17de5e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.32\",\n                            \"lessThan\": \"6.6.145\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/smb/client/smb2pdu.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.145\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.96\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.39\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.4\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 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,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/100fb7c455fa86d248b8bd7bb9de757c192870b4","https://git.kernel.org/stable/c/3c81dda84799f76b42aec598564316e2964440db","https://git.kernel.org/stable/c/f1add4acb656f5a82806a1ab0e63fed3d8b1bfca","https://git.kernel.org/stable/c/89234773e8348918111aa15f6922b58cf3843364","https://git.kernel.org/stable/c/2a88561d66eb855813cf004a0abe648bbb17de5e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64386","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64386","identifiers":["CVE-2026-64386"]},"retained":false,"historicalAffected":[]}],"coverage":[]}