{"id":"CVE-2026-45972","revision":"d8ade4d45e7442c389f21ac7f92c9649","records":[{"revision":"d8ade4d45e7442c389f21ac7f92c9649","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-45972","aliases":[],"title":"smb: client: fix potential UAF and double free in smb2_open_file()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix potential UAF and double free in smb2_open_file()\n\nZero out @err_iov and @err_buftype before retrying SMB2_open() to\nprevent an UAF bug if @data != NULL, otherwise a double free.","state":0,"publishedAt":"2026-05-27T12:18:31.5+00:00","modifiedAt":"2026-10-19T19:26:40.861+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/smb2file.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"743f70406264348c0830f38409eb6c40a42fb2db\",\n                            \"lessThan\": \"96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3a6d6b332f92990958602c1e35ce0173e2dd62e9\",\n                            \"lessThan\": \"7425453ea16dbc3bbb0f6cac4d60b537e5e4d151\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b64e3b5d8d759dd4333992e4ba4dadf9359952c8\",\n                            \"lessThan\": \"4d339b219004869e96c4ce56b8891f83a38da4c0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"9ee608a64e37cea5b4b13e436c559dd0fb2ad1b5\",\n                            \"lessThan\": \"e66dcf7bb9c4df5582c82bc3582725abcbfbea73\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e3a43633023e3cacaca60d4b8972d084a2b06236\",\n                            \"lessThan\": \"639deb962986ef2f5e2a6d5a600c66f922471e81\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e3a43633023e3cacaca60d4b8972d084a2b06236\",\n                            \"lessThan\": \"ebbbc4bfad4cb355d17c671223d0814ee3ef4eda\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.1.163\",\n                            \"lessThan\": \"6.1.165\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.124\",\n                            \"lessThan\": \"6.6.128\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.70\",\n                            \"lessThan\": \"6.12.75\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.10\",\n                            \"lessThan\": \"6.18.14\",\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/smb2file.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.19\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.19\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.165\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.128\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.75\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.14\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.19.4\",\n                            \"lessThanOrEqual\": \"6.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0\",\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/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74","https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151","https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0","https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73","https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81","https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4eda"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45972","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-45972","identifiers":["CVE-2026-45972"]},"retained":false,"historicalAffected":[]}],"coverage":[]}