{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2025-38707", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:24.032Z", "datePublished": "2025-09-04T15:32:58.386Z", "dateUpdated": "2026-08-05T12:04:08.373Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T12:04:08.373Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Add sanity check for file name\n\nThe length of the file name should be smaller than the directory entry size." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H", "baseScore": 7.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - `ntfs_dir_emit()` is reached only through `ntfs_readdir()` → `ntfs_read_hdr()`, i.e. a local `getdents64(2)` on a directory of an attacker-authored NTFS volume (loop image or removable media); there is no network-facing consumer of fs/ntfs3/dir.c.\nAC:L - `fname->name_len` is a raw on-disk u8 the attacker writes into the index entry, and `ntfs_read_hdr()` only validates `e->size >= 0x10` and `key_size >= 0x44`, so an entry with `e->size = 0x10`, `name_len = 255` placed at the tail of `hdr->used` deterministically overreads ~590 bytes past the `kmalloc(index_block_size)` buffer on the first readdir — no race, no timing window, and adjacent slab contents can be groomed beforehand.\nPR:L - ntfs3 is FS_REQUIRES_DEV without FS_USERNS_MOUNT so a bare `mount(2)` needs CAP_SYS_ADMIN, but in the most severe reasonable deployment an unprivileged local user gets the crafted image mounted via udisks2 loop-setup, desktop/kiosk removable-media automount, or `user`/autofs fstab delegation; the `getdents64` that fires the overread needs no privilege at all.\nUI:N - The attacker performs every step personally — presents the crafted volume, which an automounter consumes with no human action, then runs the directory read itself. No second victim user must be induced to act.\nS:U - The out-of-bounds read happens in ntfs3 name conversion inside the kernel and its effects stay within that same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `ntfs_utf16_to_nls(sbi, fname->name, fname->name_len, ...)` reads up to 510 bytes from `e + 0x52` with no bound tied to `e->size`, walking off the end of the `kmalloc(bytes)` INDEX_BUFFER (or the `kmalloc(sbi->record_size)` MFT record) into neighbouring slab objects, and every harvested byte is handed to `dir_emit()` and returned to userspace as a filename — a repeatable, attacker-length-controlled kernel heap disclosure primitive usable to defeat KASLR and lift secrets from groomed adjacent objects.\nI:N - The defect is strictly a read overrun; stores into the PATH_MAX `name` buffer stay bounded by `buf_len`/`utf16s_to_utf8s()` maxout with `NTFS_NAME_LEN * 4 < PATH_MAX` statically asserted, so no kernel memory is modified.\nA:H - The multi-hundred-byte overread can run off the end of the page-backed index buffer into unmapped memory, faulting inside `iterate_dir()` while the inode rwsem is held and wedging the filesystem; under KASAN, SLUB_DEBUG, or debug_pagealloc it faults immediately (this is exactly how syzbot hit it), and with panic_on_oops it is a full panic the attacker can repeat at will." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ntfs3/dir.c" ], "versions": [ { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "bde58c1539f3ffddffc94d64007de16964e6b8eb", "status": "affected", "versionType": "git" }, { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "f99eb9a641f4ef927d8724f4966dcfd1f0e9f835", "status": "affected", "versionType": "git" }, { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "3572737a768dadea904ebc4eb34b6ed575bb72d9", "status": "affected", "versionType": "git" }, { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "2ac47f738ddfc1957a33be163bc97ee8f78e85a6", "status": "affected", "versionType": "git" }, { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "b51642fc52d1c7243a9361555d5c4b24d7569d7e", "status": "affected", "versionType": "git" }, { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "27ee9a42b245efe6529e28b03453291a775cb3e4", "status": "affected", "versionType": "git" }, { "version": "4534a70b7056fd4b9a1c6db5a4ce3c98546b291e", "lessThan": "e841ecb139339602bc1853f5f09daa5d1ea920a2", "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/dir.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.190", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.149", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.103", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.43", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.15.11", "lessThanOrEqual": "6.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.16.2", "lessThanOrEqual": "6.16.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.17", "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": "5.15.190" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.149" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.103" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.43" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.15.11" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.16.2" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.17" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/bde58c1539f3ffddffc94d64007de16964e6b8eb" }, { "url": "https://git.kernel.org/stable/c/f99eb9a641f4ef927d8724f4966dcfd1f0e9f835" }, { "url": "https://git.kernel.org/stable/c/3572737a768dadea904ebc4eb34b6ed575bb72d9" }, { "url": "https://git.kernel.org/stable/c/2ac47f738ddfc1957a33be163bc97ee8f78e85a6" }, { "url": "https://git.kernel.org/stable/c/b51642fc52d1c7243a9361555d5c4b24d7569d7e" }, { "url": "https://git.kernel.org/stable/c/27ee9a42b245efe6529e28b03453291a775cb3e4" }, { "url": "https://git.kernel.org/stable/c/e841ecb139339602bc1853f5f09daa5d1ea920a2" } ], "title": "fs/ntfs3: Add sanity check for file name", "x_generator": { "engine": "bippy-1.2.0" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T17:41:37.372Z" } }, { "x_adpType": "supplier", "providerMetadata": { "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-05-12T12:05:43.177Z" }, "affected": [ { "vendor": "Siemens", "product": "SIMATIC CN 4100", "versions": [ { "status": "affected", "version": "0", "lessThan": "V5.0", "versionType": "custom" } ], "defaultStatus": "unknown" } ], "references": [ { "url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html" } ] } ] } }