{"id":"CVE-2026-64385","revision":"3651625c6391491f8602da8cdce23e7a","records":[{"revision":"3651625c6391491f8602da8cdce23e7a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64385","aliases":[],"title":"smb: client: fix double-free in SMB2_ioctl() replay","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix double-free in SMB2_ioctl() replay\n\nA response-bearing attempt can return a replayable error and free its\nresponse buffer. If SMB2_ioctl_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":"2026-07-25T08:50:33.997+00:00","modifiedAt":"2026-10-19T20:38:26.437+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\": \"0be4bc64882edaefaaee8d1e27d083643eb778e6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"96fcfc8ae7359346156e492ca610e830d2649ad6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"276c8efbc49f9303ac76d0d4deab7128581b0f3b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"fc65ffb4ef1bf540da16b17c225ae51091e07d72\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4f1fffa2376922f3d1d506e49c0fd445b023a28e\",\n                            \"lessThan\": \"f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9\",\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/0be4bc64882edaefaaee8d1e27d083643eb778e6","https://git.kernel.org/stable/c/96fcfc8ae7359346156e492ca610e830d2649ad6","https://git.kernel.org/stable/c/276c8efbc49f9303ac76d0d4deab7128581b0f3b","https://git.kernel.org/stable/c/fc65ffb4ef1bf540da16b17c225ae51091e07d72","https://git.kernel.org/stable/c/f9bbadb6c94583e3b4af1afc449bfceb1d1ddec9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64385","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64385","identifiers":["CVE-2026-64385"]},"retained":false,"historicalAffected":[]}],"coverage":[]}