{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-22081", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.816Z", "datePublished": "2025-04-16T14:12:30.850Z", "dateUpdated": "2026-08-05T11:56:36.719Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:56:36.719Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix a couple integer overflows on 32bit systems\n\nOn 32bit systems the \"off + sizeof(struct NTFS_DE)\" addition can\nhave an integer wrapping issue. Fix it by using size_add()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The vulnerable parser only runs against on-disk NTFS metadata, so the attacker must get a crafted image mounted locally (attacker-supplied removable media auto-mounted by udisks2/autofs, a loop-mounted image, or a privileged container) and then reach `hdr_find_e()` with a local `stat()`/`open()` on a path inside the malicious directory. No remote peer or network protocol touches this code.\nAC:L - The wrap is deterministic and fully attacker-authored: setting `de_off` to `0xFFFFFFF0` in the crafted index root defeats both `index_hdr_check()` and `hdr_find_e()`'s gate every time, and the resulting `offs[0] = 0xFFF0` entry is reached by the very first binary-search step. No race, no timing window, and the 32-bit kernel is a property of the targeted deployment (i686 distros, ARM32 embedded/industrial, 32-bit Android) rather than a condition the attacker must win.\nPR:L - Mounting `ntfs3` nominally needs `CAP_SYS_ADMIN` (no `FS_USERNS_MOUNT`), but on desktop, kiosk and shared-workstation deployments an ordinary logged-in user gets attacker-supplied media mounted for them by udisks2/polkit, and every step that actually drives the bug — the path lookup, the file write that triggers `ni_update_parent()` — is an unprivileged file operation. Scoring the lower-privilege reachable path.\nUI:N - No second user has to act: the automounter mounts the attacker's own device without any victim interaction, and the attacker then performs the triggering `stat()`, `ftruncate()` and writeback themselves. In the loop-mount and privileged-container variants the attacker likewise performs the mount directly.\nS:U - The out-of-bounds reads and the `indx_update_dup()` write all land in kernel slab memory and stay within the kernel's own security authority — no hypervisor, IOMMU, or container/VM boundary is crossed.\nC:H - `Add2Ptr(hdr, offs[mid_idx])` yields a pointer 65520 bytes past a 1 KB MFT record or 4 KB index buffer, and that OOB memory is then interpreted as a directory entry — its `ref` field is passed to `ntfs_iget5()`, and `cmp_fnames()` compares its name bytes against the attacker's lookup string, giving a repeatable oracle that lets the attacker read back adjacent kernel heap contents byte by byte.\nI:H - The out-of-bounds entry pointer returned by `hdr_find_e()` flows into `indx_update_dup()`, whose `memcpy(&e_fname->dup, dup, sizeof(*dup))` performs a 0x38-byte heap write ~64 KB out of bounds with content the attacker chooses (`data_size`/`alloc_size` via `ftruncate`, four timestamps via `utimensat`) — a controlled OOB write suitable for corrupting adjacent slab objects and hijacking control flow.\nA:H - A read 65520 bytes past a small kmalloc allocation reliably faults on unmapped memory or trips KASAN/KFENCE, and the `WARN_ON(!e)` in `indx_insert_into_root()` fires on the same corrupted pointer, so a single `stat()` on the crafted mount oopses or panics the kernel." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ntfs3/index.c" ], "versions": [ { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "0922d86a7a6032cb1694eab0b44b861bd33ba8d5", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "1a14e9718a19d2e88de004a1360bfd7a86ed1395", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "0dfe700fbd3525f30a36ffbe390a5b9319bd009a", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "284c9549386e9883855fb82b730303bb2edea9de", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "0538f52410b619737e663167b6a2b2d0bc1a589d", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "4d0f4f42922a832388a0c2fe5204c0a1037ff786", "status": "affected", "versionType": "git" }, { "version": "82cae269cfa953032fbb8980a7d554d60fb00b17", "lessThan": "5ad414f4df2294b28836b5b7b69787659d6aa708", "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/index.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.180", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.134", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.87", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.23", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.13.11", "lessThanOrEqual": "6.13.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.14.2", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15", "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": "5.15.180" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.134" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.87" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.23" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.13.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.14.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.15" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/0922d86a7a6032cb1694eab0b44b861bd33ba8d5" }, { "url": "https://git.kernel.org/stable/c/1a14e9718a19d2e88de004a1360bfd7a86ed1395" }, { "url": "https://git.kernel.org/stable/c/0dfe700fbd3525f30a36ffbe390a5b9319bd009a" }, { "url": "https://git.kernel.org/stable/c/284c9549386e9883855fb82b730303bb2edea9de" }, { "url": "https://git.kernel.org/stable/c/0538f52410b619737e663167b6a2b2d0bc1a589d" }, { "url": "https://git.kernel.org/stable/c/4d0f4f42922a832388a0c2fe5204c0a1037ff786" }, { "url": "https://git.kernel.org/stable/c/5ad414f4df2294b28836b5b7b69787659d6aa708" } ], "title": "fs/ntfs3: Fix a couple integer overflows on 32bit systems", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "problemTypes": [ { "descriptions": [ { "type": "CWE", "cweId": "CWE-190", "lang": "en", "description": "CWE-190 Integer Overflow or Wraparound" } ] } ], "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2025-10-01T16:15:26.291199Z", "id": "CVE-2025-22081", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-01T16:15:28.849Z" } }, { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:42:00.625Z" } } ] } }