{"id":"CVE-2026-64532","revision":"5d00815573c6412b9bb288f1d5ab0ddd","records":[{"revision":"5d00815573c6412b9bb288f1d5ab0ddd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-64532","aliases":[],"title":"fs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,Allocation}","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,Allocation}\n\nIn do_action()'s UpdateRecordDataRoot (fslog.c:3489) and\nUpdateRecordDataAllocation (fslog.c:3697) cases, the memmove\ndestination is `Add2Ptr(e, le16_to_cpu(e->view.data_off))`,\nwhere e->view.data_off comes from an on-disk NTFS_DE inside\nan INDEX_ROOT or INDEX_BUFFER.  Neither case validates\nview.data_off + dlen against e->size; the existing\ncheck_if_index_root / check_if_alloc_index helpers walk the\nentry chain and validate the entry's offset, but not its\ninternal view fields.\n\nThe neighbouring read sites (e.g., fs/ntfs3/index.c when\niterating view entries) check view.data_off + view.data_size\n<= e->size.  Apply the same bound at the two memmove sites.\n\nReproduced under UML+KASAN on mainline 8d90b09e6741 via\npr_warn-only probe instrumentation: with view.data_off forced\nto 0xFFFC, the memmove writes 32 bytes past the end of the\nNTFS_DE.\n\nThis is similar in shape to Pavitra Jha's 2026-05-02 patch\n\"fs/ntfs3: prevent oob in case UpdateRecordDataRoot\"\n(<20260502105008.21827-1-jhapavitra98@gmail.com>) which\nproposes calling ntfs3_bad_de_range(); that helper does not\nexist in mainline.  This patch uses inline checks.","state":0,"publishedAt":"2026-07-27T06:32:33.159+00:00","modifiedAt":"2026-10-19T20:48:38.58+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/ntfs3/fslog.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"b20e5a709d8bd190d6e4645606763c7423e694c1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"d41b382068ca4e64e421f736cdd700095464b6ac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"429d653ca641d38a78609b8f62e81a0a5c780a2d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"315d3a9a48b49f889da3d858a9307e677cb9e1bd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"be306b8d9143a9c076c804a7ca025d69caf9c448\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"36feda687afebae24c472202694448738809c411\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"b46acd6a6a627d876898e1c84d3f84902264b445\",\n                            \"lessThan\": \"3e127829e57f5190f612412ece4541cb96d5ec7a\",\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/ntfs3/fslog.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.212\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.178\",\n                            \"lessThanOrEqual\": \"6.1.*\",\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\": \"6.12.97\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.40\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.5\",\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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/b20e5a709d8bd190d6e4645606763c7423e694c1","https://git.kernel.org/stable/c/d41b382068ca4e64e421f736cdd700095464b6ac","https://git.kernel.org/stable/c/429d653ca641d38a78609b8f62e81a0a5c780a2d","https://git.kernel.org/stable/c/315d3a9a48b49f889da3d858a9307e677cb9e1bd","https://git.kernel.org/stable/c/be306b8d9143a9c076c804a7ca025d69caf9c448","https://git.kernel.org/stable/c/36feda687afebae24c472202694448738809c411","https://git.kernel.org/stable/c/3e127829e57f5190f612412ece4541cb96d5ec7a"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-64532","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-64532","identifiers":["CVE-2026-64532"]},"retained":false,"historicalAffected":[]}],"coverage":[]}