275 lines
13 KiB
JSON
275 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2023-52640",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-03-06T09:52:12.093Z",
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"datePublished": "2024-04-03T17:00:10.216Z",
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"dateUpdated": "2026-08-05T09:10:51.122Z"
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},
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T09:10:51.122Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/ntfs3: Fix oob in ntfs_listxattr\n\nThe length of name cannot exceed the space occupied by ea."
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}
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
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"baseScore": 7.1,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The vulnerable path is ntfs3 on-disk EA parsing reached via the local listxattr syscall on a mounted NTFS volume (USB/loop/NBD image); no network protocol handler is involved.\nAC:L - A crafted NTFS image with an EA whose name_len exceeds ea_size deterministically triggers the slab OOB read on listxattr with no race or other condition outside the attacker's control.\nPR:L - vfs_listxattr does not require MAY_READ—only path reachability and LSM listxattr hooks—so an unprivileged local user who can reach a file on a mounted NTFS volume can invoke the vulnerable path.\nUI:N - Once an NTFS volume is mounted (common for removable/dual-boot/shared storage, including automount), the attacker triggers the bug solely by calling listxattr with no further victim interaction.\nS:U - Impact is confined to the local kernel's memory and availability authority; this is standard kernel memory-safety impact with no VM, IOMMU, or sandbox boundary crossed.\nC:H - The slab OOB read in ntfs_list_ea memcpy's attacker-influenced lengths of adjacent slab memory into the listxattr buffer that is copied to userspace, enabling kernel heap disclosure.\nI:N - The defect is an out-of-bounds read only; memcpy destinations are the legitimate list buffer under a size check, with no OOB write or other kernel integrity corruption primitive.\nA:H - The OOB access causes KASAN slab-out-of-bounds faults and can oops/panic the kernel when invalid EA iteration touches unmapped or poisoned slab memory, enabling denial of service."
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}
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]
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}
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"defaultStatus": "unaffected",
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"fs/ntfs3/xattr.c"
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"fs/ntfs3/xattr.c"
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"versions": [
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"version": "5.15",
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{
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"version": "0",
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"lessThan": "5.15",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.150",
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"lessThanOrEqual": "5.15.*",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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},
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{
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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},
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{
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"version": "6.7.7",
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"lessThanOrEqual": "6.7.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.8",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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