{"id":"CVE-2025-40099","revision":null,"records":[{"revision":"92490018a0764d0bafa7187b2006f416","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-40099","aliases":[],"title":"cifs: parse_dfs_referrals: prevent oob on malformed input","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: parse_dfs_referrals: prevent oob on malformed input\n\nMalicious SMB server can send invalid reply to FSCTL_DFS_GET_REFERRALS\n\n- reply smaller than sizeof(struct get_dfs_referral_rsp)\n- reply with number of referrals smaller than NumberOfReferrals in the\nheader\n\nProcessing of such replies will cause oob.\n\nReturn -EINVAL error on such replies to prevent oob-s.","state":0,"publishedAt":"2025-10-30T09:48:05.859+00:00","modifiedAt":"2026-10-15T22:02:37.745+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/misc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4ecce920e13ace16a5ba45efe8909946c28fb2ad\",\n                            \"lessThan\": \"cfacc7441f760e4a73cc71b6ff1635261d534657\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4ecce920e13ace16a5ba45efe8909946c28fb2ad\",\n                            \"lessThan\": \"15c73964da9df994302f579ed14ee5fdbce7a332\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4ecce920e13ace16a5ba45efe8909946c28fb2ad\",\n                            \"lessThan\": \"8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4ecce920e13ace16a5ba45efe8909946c28fb2ad\",\n                            \"lessThan\": \"bb0f2e66e1ac043a5b238f5bcab4f26f3c317039\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4ecce920e13ace16a5ba45efe8909946c28fb2ad\",\n                            \"lessThan\": \"6447b0e355562a1ff748c4a2ffb89aae7e84d2c9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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/misc.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.11\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.158\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.114\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.55\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.17.5\",\n                            \"lessThanOrEqual\": \"6.17.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18\",\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:L/A:H","score":9.4,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/cfacc7441f760e4a73cc71b6ff1635261d534657","https://git.kernel.org/stable/c/15c73964da9df994302f579ed14ee5fdbce7a332","https://git.kernel.org/stable/c/8bc4a8d39bac23d8b044fd3e2dbfd965f1d9b058","https://git.kernel.org/stable/c/bb0f2e66e1ac043a5b238f5bcab4f26f3c317039","https://git.kernel.org/stable/c/6447b0e355562a1ff748c4a2ffb89aae7e84d2c9"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-40099","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-40099","identifiers":["CVE-2025-40099"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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