{"api_version":"1","generated_at":"2026-05-13T04:43:51+00:00","cve":"CVE-2026-43245","urls":{"html":"https://cve.report/CVE-2026-43245","api":"https://cve.report/api/cve/CVE-2026-43245.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43245","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43245"},"summary":{"title":"ntfs: ->d_compare() must not block","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: ->d_compare() must not block\n\n... so don't use __getname() there.  Switch it (and ntfs_d_hash(), while\nwe are at it) to kmalloc(PATH_MAX, GFP_NOWAIT).  Yes, ntfs_d_hash()\nalmost certainly can do with smaller allocations, but let ntfs folks\ndeal with that - keep the allocation size as-is for now.\n\nStop abusing names_cachep in ntfs, period - various uses of that thing\nin there have nothing to do with pathnames; just use k[mz]alloc() and\nbe done with that.  For now let's keep sizes as-in, but AFAICS none of\nthe users actually want PATH_MAX.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 12:16:44","updated_at":"2026-05-11 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the Linux kernel, the following vulnerability has been resolved:\n\nntfs: ->d_compare() must not block\n\n... so don't use __getname() there.  Switch it (and ntfs_d_hash(), while\nwe are at it) to kmalloc(PATH_MAX, GFP_NOWAIT).  Yes, ntfs_d_hash()\nalmost certainly can do with smaller allocations, but let ntfs folks\ndeal with that - keep the allocation size as-is for now.\n\nStop abusing names_cachep in ntfs, period - various uses of that thing\nin there have nothing to do with pathnames; just use k[mz]alloc() and\nbe done with that.  For now let's keep sizes as-in, but AFAICS none of\nthe users actually want PATH_MAX."}],"metrics":[{"cvssV3_1":{"baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"providerMetadata":{"dateUpdated":"2026-05-08T12:41:32.781Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/142c444a395f4d26055c8a4473e228bb86283f1e"},{"url":"https://git.kernel.org/stable/c/fb4b1f969ba01fa1d4088467a02fc1e5f0806710"},{"url":"https://git.kernel.org/stable/c/ca2a04e84af79596e5cd9cfe697d5122ec39c8ce"}],"title":"ntfs: ->d_compare() must not block","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43245","datePublished":"2026-05-06T11:28:37.602Z","dateReserved":"2026-05-01T14:12:55.996Z","dateUpdated":"2026-05-08T12:41:32.781Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 12:16:44","lastModifiedDate":"2026-05-11 13:34:25","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.16","matchCriteriaId":"40E6DAD9-881B-4BD4-B3F0-5D58086379A4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"6.19.6","matchCriteriaId":"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43245","Ordinal":"1","Title":"ntfs: ->d_compare() must not block","CVE":"CVE-2026-43245","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43245","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nntfs: ->d_compare() must not block\n\n... so don't use __getname() there.  Switch it (and ntfs_d_hash(), while\nwe are at it) to kmalloc(PATH_MAX, GFP_NOWAIT).  Yes, ntfs_d_hash()\nalmost certainly can do with smaller allocations, but let ntfs folks\ndeal with that - keep the allocation size as-is for now.\n\nStop abusing names_cachep in ntfs, period - various uses of that thing\nin there have nothing to do with pathnames; just use k[mz]alloc() and\nbe done with that.  For now let's keep sizes as-in, but AFAICS none of\nthe users actually want PATH_MAX.","Type":"Description","Title":"ntfs: ->d_compare() must not block"}]}}}