{"api_version":"1","generated_at":"2026-09-13T13:17:21+00:00","cve":"CVE-2026-89701","urls":{"html":"https://cve.report/CVE-2026-89701","api":"https://cve.report/api/cve/CVE-2026-89701.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89701","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89701"},"summary":{"title":"nfsd: validate nseconds in TIME_DELEG decode paths","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: validate nseconds in TIME_DELEG decode paths\n\nThe xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms\nstore a raw uint32_t nseconds directly into tv_nsec without enforcing\nnseconds < NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this\ncheck but the TIME_DELEG paths do not. A malformed timespec can\npropagate through notify_change() to disk.\n\nAdd range checks in both nfs4xdr.c (SETATTR path) and\nnfs4callback.c (CB_GETATTR path).","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:57","updated_at":"2026-09-11 20:19:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6","name":"https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c","name":"https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065","name":"https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89701","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89701","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ae30d6eb26bce02c48c60074b4306270e2434c1 7e7b93da7fa2e77f977096251899d1410986adf6 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ae30d6eb26bce02c48c60074b4306270e2434c1 5eb489831a9fd4754f4baf26e6989efb66ce104c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6ae30d6eb26bce02c48c60074b4306270e2434c1 0f4a767340fad392bd656115b8752005518c9065 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"89701","cve":"CVE-2026-89701","epss":"0.001660000","percentile":"0.061350000","score_date":"2026-09-12","updated_at":"2026-09-13 00:08:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/nfsd/nfs4callback.c","fs/nfsd/nfs4xdr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7e7b93da7fa2e77f977096251899d1410986adf6","status":"affected","version":"6ae30d6eb26bce02c48c60074b4306270e2434c1","versionType":"git"},{"lessThan":"5eb489831a9fd4754f4baf26e6989efb66ce104c","status":"affected","version":"6ae30d6eb26bce02c48c60074b4306270e2434c1","versionType":"git"},{"lessThan":"0f4a767340fad392bd656115b8752005518c9065","status":"affected","version":"6ae30d6eb26bce02c48c60074b4306270e2434c1","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/nfsd/nfs4callback.c","fs/nfsd/nfs4xdr.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: validate nseconds in TIME_DELEG decode paths\n\nThe xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms\nstore a raw uint32_t nseconds directly into tv_nsec without enforcing\nnseconds < NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this\ncheck but the TIME_DELEG paths do not. A malformed timespec can\npropagate through notify_change() to disk.\n\nAdd range checks in both nfs4xdr.c (SETATTR path) and\nnfs4callback.c (CB_GETATTR path)."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:46:18.807Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7e7b93da7fa2e77f977096251899d1410986adf6"},{"url":"https://git.kernel.org/stable/c/5eb489831a9fd4754f4baf26e6989efb66ce104c"},{"url":"https://git.kernel.org/stable/c/0f4a767340fad392bd656115b8752005518c9065"}],"title":"nfsd: validate nseconds in TIME_DELEG decode paths","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89701","datePublished":"2026-09-11T19:46:18.807Z","dateReserved":"2026-09-11T19:38:34.750Z","dateUpdated":"2026-09-11T19:46:18.807Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:57","lastModifiedDate":"2026-09-11 20:19:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89701","Ordinal":"1","Title":"nfsd: validate nseconds in TIME_DELEG decode paths","CVE":"CVE-2026-89701","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89701","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: validate nseconds in TIME_DELEG decode paths\n\nThe xdrgen-based TIME_DELEG_ACCESS and TIME_DELEG_MODIFY decode arms\nstore a raw uint32_t nseconds directly into tv_nsec without enforcing\nnseconds < NSEC_PER_SEC. The legacy nfsd4_decode_nfstime4 has this\ncheck but the TIME_DELEG paths do not. A malformed timespec can\npropagate through notify_change() to disk.\n\nAdd range checks in both nfs4xdr.c (SETATTR path) and\nnfs4callback.c (CB_GETATTR path).","Type":"Description","Title":"nfsd: validate nseconds in TIME_DELEG decode paths"}]}}}