159 lines
8.9 KiB
JSON
159 lines
8.9 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-2026-72477",
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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": "2026-08-09T03:40:39.934Z",
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"datePublished": "2026-08-15T05:57:17.035Z",
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"dateUpdated": "2026-10-15T10:08:45.810Z"
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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": "2026-10-15T10:08:45.810Z"
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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: call _ntfs_bad_inode() when failing to rename\n\nIt is safe to call _ntfs_bad_inode on live inodes since:\n commit 519b078998ce (\"fs/ntfs3: Exclude call make_bad_inode for live nodes.\")\n\nThe WARN_ON was added when it wasn't safe by:\n commit d99208b91933 (\"fs/ntfs3: cancle set bad inode after removing name fails\")\n\nReplace the WARN_ON with a call to _ntfs_bad_inode() to prevent further\noperations on the inconsistent inode."
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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 - ntfs3 registers export_operations and rename on an NFS- or SMB-exported NTFS volume reaches ni_rename() through nfsd/ksmbd vfs_rename without any local syscall; hybrid NAS and Windows/Linux file-server deployments are a reasonable high-impact reach path for this VFS rename flaw.\nAC:L - An attacker controls the on-disk NTFS layout and rename arguments so ni_add_name succeeds and both ni_remove_name steps fail deterministically; syzkaller reproduces this with a crafted loop image and no races or victim-specific timing outside attacker influence.\nPR:N - Exploitation needs only permission to rename on an exported NTFS share (including guest/anonymous NFS or SMB write access) or to supply removable media later mounted by the host; no init-namespace root, CAP_SYS_ADMIN, or other elevated host credentials are required.\nUI:N - Once an administrator has mounted and exported the NTFS volume (or automounted dual-boot/shared storage), the attacker triggers the flawed rename directly; no further victim clicks, file opens, or cooperative actions are needed beyond that standing configuration.\nS:U - Impact is kernel heap/metadata corruption and denial of service within the same kernel security authority; this is standard local or network filesystem exploitation, not a VM escape, IOMMU bypass, or cross-scope sandbox breakout.\nC:H - Leaving the inode operable after a failed rename rollback preserves inconsistent MFT/directory index state; subsequent lookups and index walks parse attacker-influenced corrupt metadata, matching ntfs3 guidance to score metadata corruption that can yield kernel memory disclosure as High.\nI:H - Without ni_bad set, further writes, unlinks, and renames continue against mismatched $FILE_NAME and $I30 state, propagating attacker-steerable directory/MFT corruption and heap metadata damage that can be leveraged for arbitrary kernel writes or control-flow hijack.\nA:H - The vulnerable path emits WARN_ON in ni_rename (kernel panic on panic_on_warn) and syzbot also hit a kernel paging fault in folio_wait_bit_common after follow-on operations on the inconsistent inode; any kernel oops, hang, or panic from continued use scores Availability High."
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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/ntfs3/frecord.c"
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],
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"versions": [
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{
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"version": "519b078998ce6e729f98dccf35505b4756985d11",
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"lessThan": "580896e33003845de66c75cd61544cf9d9bfbe15",
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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": "519b078998ce6e729f98dccf35505b4756985d11",
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"lessThan": "ff825bf0521f6da2f30878cbad18ab7b341bc31b",
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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": "519b078998ce6e729f98dccf35505b4756985d11",
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"lessThan": "e8ed78f40eecd0176fda71d673f6957c98e7ffbe",
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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/ntfs3/frecord.c"
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],
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"versions": [
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{
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"version": "6.17",
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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": "6.17",
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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": "6.18.57",
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"lessThanOrEqual": "6.18.*",
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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": "7.1.5",
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"lessThanOrEqual": "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",
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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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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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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": "6.17",
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"versionEndExcluding": "6.18.57"
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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": "6.17",
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"versionEndExcluding": "7.1.5"
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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": "6.17",
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"versionEndExcluding": "7.2"
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}
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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/580896e33003845de66c75cd61544cf9d9bfbe15"
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},
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{
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"url": "https://git.kernel.org/stable/c/ff825bf0521f6da2f30878cbad18ab7b341bc31b"
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},
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{
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"url": "https://git.kernel.org/stable/c/e8ed78f40eecd0176fda71d673f6957c98e7ffbe"
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}
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],
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"title": "fs/ntfs3: call _ntfs_bad_inode() when failing to rename",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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} |