{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-72477", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-08-09T03:40:39.934Z", "datePublished": "2026-08-15T05:57:17.035Z", "dateUpdated": "2026-10-15T10:08:45.810Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-15T10:08:45.810Z" }, "descriptions": [ { "lang": "en", "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." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL" }, "scenarios": [ { "lang": "en", "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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "fs/ntfs3/frecord.c" ], "versions": [ { "version": "519b078998ce6e729f98dccf35505b4756985d11", "lessThan": "580896e33003845de66c75cd61544cf9d9bfbe15", "status": "affected", "versionType": "git" }, { "version": "519b078998ce6e729f98dccf35505b4756985d11", "lessThan": "ff825bf0521f6da2f30878cbad18ab7b341bc31b", "status": "affected", "versionType": "git" }, { "version": "519b078998ce6e729f98dccf35505b4756985d11", "lessThan": "e8ed78f40eecd0176fda71d673f6957c98e7ffbe", "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/frecord.c" ], "versions": [ { "version": "6.17", "status": "affected" }, { "version": "0", "lessThan": "6.17", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.1.5", "lessThanOrEqual": "7.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2", "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": "6.17", "versionEndExcluding": "6.18.57" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.1.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.17", "versionEndExcluding": "7.2" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/580896e33003845de66c75cd61544cf9d9bfbe15" }, { "url": "https://git.kernel.org/stable/c/ff825bf0521f6da2f30878cbad18ab7b341bc31b" }, { "url": "https://git.kernel.org/stable/c/e8ed78f40eecd0176fda71d673f6957c98e7ffbe" } ], "title": "fs/ntfs3: call _ntfs_bad_inode() when failing to rename", "x_generator": { "engine": "bippy-1.2.0" } } } }