{"api_version":"1","generated_at":"2026-07-28T07:32:22+00:00","cve":"CVE-2026-64532","urls":{"html":"https://cve.report/CVE-2026-64532","api":"https://cve.report/api/cve/CVE-2026-64532.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-64532","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-64532"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-07-27 08:16:22","updated_at":"2026-07-27 08:16:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/d41b382068ca4e64e421f736cdd700095464b6ac","name":"https://git.kernel.org/stable/c/d41b382068ca4e64e421f736cdd700095464b6ac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/429d653ca641d38a78609b8f62e81a0a5c780a2d","name":"https://git.kernel.org/stable/c/429d653ca641d38a78609b8f62e81a0a5c780a2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/b20e5a709d8bd190d6e4645606763c7423e694c1","name":"https://git.kernel.org/stable/c/b20e5a709d8bd190d6e4645606763c7423e694c1","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/36feda687afebae24c472202694448738809c411","name":"https://git.kernel.org/stable/c/36feda687afebae24c472202694448738809c411","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/315d3a9a48b49f889da3d858a9307e677cb9e1bd","name":"https://git.kernel.org/stable/c/315d3a9a48b49f889da3d858a9307e677cb9e1bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/be306b8d9143a9c076c804a7ca025d69caf9c448","name":"https://git.kernel.org/stable/c/be306b8d9143a9c076c804a7ca025d69caf9c448","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/3e127829e57f5190f612412ece4541cb96d5ec7a","name":"https://git.kernel.org/stable/c/3e127829e57f5190f612412ece4541cb96d5ec7a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-64532","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-64532","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 b20e5a709d8bd190d6e4645606763c7423e694c1 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 d41b382068ca4e64e421f736cdd700095464b6ac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 429d653ca641d38a78609b8f62e81a0a5c780a2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 315d3a9a48b49f889da3d858a9307e677cb9e1bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 be306b8d9143a9c076c804a7ca025d69caf9c448 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 36feda687afebae24c472202694448738809c411 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b46acd6a6a627d876898e1c84d3f84902264b445 3e127829e57f5190f612412ece4541cb96d5ec7a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.212 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.178 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.145 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.97 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.40 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.5 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/ntfs3/fslog.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"b20e5a709d8bd190d6e4645606763c7423e694c1","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"},{"lessThan":"d41b382068ca4e64e421f736cdd700095464b6ac","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"},{"lessThan":"429d653ca641d38a78609b8f62e81a0a5c780a2d","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"},{"lessThan":"315d3a9a48b49f889da3d858a9307e677cb9e1bd","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"},{"lessThan":"be306b8d9143a9c076c804a7ca025d69caf9c448","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"},{"lessThan":"36feda687afebae24c472202694448738809c411","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"},{"lessThan":"3e127829e57f5190f612412ece4541cb96d5ec7a","status":"affected","version":"b46acd6a6a627d876898e1c84d3f84902264b445","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/ntfs3/fslog.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.15"},{"lessThan":"5.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.212","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.178","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.145","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.97","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.40","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.212","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.178","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.145","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.97","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.40","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.5","versionStartIncluding":"5.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc1","versionStartIncluding":"5.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-07-27T06:32:33.159Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/b20e5a709d8bd190d6e4645606763c7423e694c1"},{"url":"https://git.kernel.org/stable/c/d41b382068ca4e64e421f736cdd700095464b6ac"},{"url":"https://git.kernel.org/stable/c/429d653ca641d38a78609b8f62e81a0a5c780a2d"},{"url":"https://git.kernel.org/stable/c/315d3a9a48b49f889da3d858a9307e677cb9e1bd"},{"url":"https://git.kernel.org/stable/c/be306b8d9143a9c076c804a7ca025d69caf9c448"},{"url":"https://git.kernel.org/stable/c/36feda687afebae24c472202694448738809c411"},{"url":"https://git.kernel.org/stable/c/3e127829e57f5190f612412ece4541cb96d5ec7a"}],"title":"fs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,Allocation}","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-64532","datePublished":"2026-07-27T06:32:33.159Z","dateReserved":"2026-07-19T15:36:31.794Z","dateUpdated":"2026-07-27T06:32:33.159Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-27 08:16:22","lastModifiedDate":"2026-07-27 08:16:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"64532","Ordinal":"1","Title":"fs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,A","CVE":"CVE-2026-64532","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"64532","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"fs/ntfs3: bound NTFS_DE view.data_off in UpdateRecordData{Root,A"}]}}}