138 lines
7.2 KiB
JSON
138 lines
7.2 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-2026-89613",
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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": "2026-09-11T19:38:34.735Z",
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"datePublished": "2026-09-11T19:45:14.081Z",
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"dateUpdated": "2026-10-19T08:49:45.874Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-10-19T08:49:45.874Z"
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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\nntfs: reject invalid empty mapping pairs\n\nReject an attribute with empty mapping pairs if it has inconsistent\nhighest VCN and size."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL"
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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:N - fs/ntfs registers ntfs_export_ops, so nfsd/ksmbd VFS reads on an exported NTFS volume reach ntfs_map_runlist()->ntfs_mapping_pairs_decompress() for crafted on-disk mapping pairs without local shell access.\nAC:L - The attacker fully controls the empty mapping-pairs terminator, lowest/highest VCN, and allocated/data/initialized sizes; decompressing that attribute and merging the resulting degenerate runlist is deterministic with no race or victim-specific layout.\nPR:N - Triggering the decoder needs only permission to cause server-side parsing of mounted NTFS metadata (guest/anonymous SMB or a permissive NFS export, or an unprivileged open/read on an already-mounted volume), not init-namespace root or CAP_SYS_ADMIN at trigger time.\nUI:N - After the crafted volume is mounted and exported, ordinary remote or local reads decompress the invalid empty mapping pairs and enter the merge path; no extra victim mount dialog, USB insertion, or confirmation is required during the attack.\nS:U - Heap corruption of the in-memory runlist and subsequent misdirected cluster I/O remain in the host kernel security domain and do not cross a VM, container, or IOMMU boundary to another authority.\nC:H - Merging the degenerate unmapped runlist computes a negative source size and indexes src+ssize-1 / dst[marker] outside the allocation, an unbounded kernel heap out-of-bounds read that can disclose adjacent objects.\nI:H - The same merge performs out-of-bounds runlist writes via marker/loc arithmetic with ssize<0 and later I/O using corrupted VCN/LCN mappings, a kernel heap write primitive sufficient for control-flow hijacking.\nA:H - WARN_ON on an entirely unmapped source runlist, heap out-of-bounds access, and corrupted runlist walks oops or panic the kernel, fully denying availability even when exploitation is not completed."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ntfs/runlist.c"
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],
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"versions": [
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{
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"version": "11ccc9107dc460de28af90fac1f42404d9802735",
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"lessThan": "b0cc6dbc655e037251874b3e0dd1a760dcf29007",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "11ccc9107dc460de28af90fac1f42404d9802735",
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"lessThan": "766062a82e1ce4087c7dc077224144dfd34b3661",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"fs/ntfs/runlist.c"
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],
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"versions": [
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{
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"version": "7.1",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "7.1",
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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": "7.2.4",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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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],
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"cpeApplicability": [
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"versionStartIncluding": "7.1",
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"versionEndExcluding": "7.2.4"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "7.1",
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}
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b0cc6dbc655e037251874b3e0dd1a760dcf29007"
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},
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{
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"url": "https://git.kernel.org/stable/c/766062a82e1ce4087c7dc077224144dfd34b3661"
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}
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],
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"title": "ntfs: reject invalid empty mapping pairs",
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