{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89617", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.735Z", "datePublished": "2026-09-11T19:45:16.737Z", "dateUpdated": "2026-09-11T19:45:16.737Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:45:16.737Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: validate dirty page table on log replay\n\nEach DIR_PAGE_ENTRY ends in a page_lcns[] array whose length is the on-disk\nlcns_follow field. check_rstbl() validates the table bookkeeping but never\nchecks that this array fits in the entry, so a crafted lcns_follow lets the\nv0->v1 conversion memmove and later replay passes run off the entry.\n\nAdd check_dp_table() to reject, right after check_rstbl(), any entry larger\nthan its size claims via struct_size() (the same expression used to allocate\nthese entries, so the check is overflow-safe by construction). All consumers\ncan then trust lcns_follow as the real capacity. This covers every\npage_lcns[] access whose index is bounded by the entry itself (the\nconversion memmove, the HotFix store via find_dp(), and the self-bounded\nscan loops). Accesses whose index comes from the log record need a separate\nbound and are handled in a follow-up patch."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ntfs3/fslog.c"], "versions": [{"version": "b46acd6a6a627d876898e1c84d3f84902264b445", "lessThan": "1200c2779c43b62656ccbb67df9468a7a9af2484", "status": "affected", "versionType": "git"}, {"version": "b46acd6a6a627d876898e1c84d3f84902264b445", "lessThan": "2d94ffc9d7b5bb3517b129fe63b52d84bcd4ae56", "status": "affected", "versionType": "git"}, {"version": "b46acd6a6a627d876898e1c84d3f84902264b445", "lessThan": "0908da07c23be4f94b99dfd9a94765525f0fe4bd", "status": "affected", "versionType": "git"}, {"version": "b46acd6a6a627d876898e1c84d3f84902264b445", "lessThan": "006cb7713dec10368e699abc4367e5faa334c9a5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/ntfs3/fslog.c"], "versions": [{"version": "5.15", "status": "affected"}, {"version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/1200c2779c43b62656ccbb67df9468a7a9af2484"}, {"url": "https://git.kernel.org/stable/c/2d94ffc9d7b5bb3517b129fe63b52d84bcd4ae56"}, {"url": "https://git.kernel.org/stable/c/0908da07c23be4f94b99dfd9a94765525f0fe4bd"}, {"url": "https://git.kernel.org/stable/c/006cb7713dec10368e699abc4367e5faa334c9a5"}], "title": "fs/ntfs3: validate dirty page table on log replay", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"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": "1200c2779c43b62656ccbb67df9468a7a9af2484", "status": "affected", "version": "b46acd6a6a627d876898e1c84d3f84902264b445", "versionType": "git"}, {"lessThan": "2d94ffc9d7b5bb3517b129fe63b52d84bcd4ae56", "status": "affected", "version": "b46acd6a6a627d876898e1c84d3f84902264b445", "versionType": "git"}, {"lessThan": "0908da07c23be4f94b99dfd9a94765525f0fe4bd", "status": "affected", "version": "b46acd6a6a627d876898e1c84d3f84902264b445", "versionType": "git"}, {"lessThan": "006cb7713dec10368e699abc4367e5faa334c9a5", "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": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: validate dirty page table on log replay\n\nEach DIR_PAGE_ENTRY ends in a page_lcns[] array whose length is the on-disk\nlcns_follow field. check_rstbl() validates the table bookkeeping but never\nchecks that this array fits in the entry, so a crafted lcns_follow lets the\nv0->v1 conversion memmove and later replay passes run off the entry.\n\nAdd check_dp_table() to reject, right after check_rstbl(), any entry larger\nthan its size claims via struct_size() (the same expression used to allocate\nthese entries, so the check is overflow-safe by construction). All consumers\ncan then trust lcns_follow as the real capacity. This covers every\npage_lcns[] access whose index is bounded by the entry itself (the\nconversion memmove, the HotFix store via find_dp(), and the self-bounded\nscan loops). Accesses whose index comes from the log record need a separate\nbound and are handled in a follow-up patch."}], "id": "CVE-2026-89617", "lastModified": "2026-09-11T20:19:46.917", "metrics": {}, "published": "2026-09-11T20:19:46.917", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/006cb7713dec10368e699abc4367e5faa334c9a5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0908da07c23be4f94b99dfd9a94765525f0fe4bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1200c2779c43b62656ccbb67df9468a7a9af2484"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2d94ffc9d7b5bb3517b129fe63b52d84bcd4ae56"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux kernel: NTFS3 filesystem vulnerable to memory corruption via crafted log replay", "id": "2532222", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532222"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in the Linux kernel's NTFS3 filesystem driver. An attacker with local access could craft a malicious NTFS log file. During log replay, insufficient validation of the `lcns_follow` field in a `DIR_PAGE_ENTRY` could lead to an out-of-bounds write. This memory corruption could result in a system crash (denial of service) or potentially allow for further exploitation."], "name": "CVE-2026-89617", "public_date": "2026-09-11T19:45:16Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89617\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89617\nhttps://git.kernel.org/stable/c/006cb7713dec10368e699abc4367e5faa334c9a5\nhttps://git.kernel.org/stable/c/0908da07c23be4f94b99dfd9a94765525f0fe4bd\nhttps://git.kernel.org/stable/c/1200c2779c43b62656ccbb67df9468a7a9af2484\nhttps://git.kernel.org/stable/c/2d94ffc9d7b5bb3517b129fe63b52d84bcd4ae56"], "threat_severity": "Important"}

{}