{"id":"CVE-2026-64384","revision":"086523962b3a41fcadca67895a8bb0fc","records":[{"revision":"086523962b3a41fcadca67895a8bb0fc","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64384","aliases":[],"title":"smb: client: fix change notify replay double-free","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix change notify replay double-free\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_notify_init() fails before the next send, cleanup\nretains the previous buffer type and frees that response again.\n\nReset response bookkeeping before each attempt to prevent the stale free.","state":0,"publishedAt":"2026-07-25T08:50:33.306+00:00","modifiedAt":"2026-10-19T20:38:26.294+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\": \"5821f9dbb8b5b24391850a13418e633edd0fb003\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"d684f4134998085702009b94c35c2003fc9e72d3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"52af1975f0dfae990c5a0e85872cc41be0e88a68\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"901891513951bc8322ece754863909ea45af95c6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"145f820dcbb2cced374f2532f8a61a44dce4a615\",\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/5821f9dbb8b5b24391850a13418e633edd0fb003","https://git.kernel.org/stable/c/d684f4134998085702009b94c35c2003fc9e72d3","https://git.kernel.org/stable/c/52af1975f0dfae990c5a0e85872cc41be0e88a68","https://git.kernel.org/stable/c/901891513951bc8322ece754863909ea45af95c6","https://git.kernel.org/stable/c/145f820dcbb2cced374f2532f8a61a44dce4a615"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64384","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64384","identifiers":["CVE-2026-64384"]},"retained":false,"historicalAffected":[]}],"coverage":[]}