{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89701","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.750Z","datePublished":"2026-09-11T19:46:18.807Z","dateUpdated":"2026-09-11T19:46:18.807Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-11T19:46:18.807Z"},"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)."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["fs/nfsd/nfs4callback.c","fs/nfsd/nfs4xdr.c"],"versions":[{"version":"6ae30d6eb26bce02c48c60074b4306270e2434c1","lessThan":"7e7b93da7fa2e77f977096251899d1410986adf6","status":"affected","versionType":"git"},{"version":"6ae30d6eb26bce02c48c60074b4306270e2434c1","lessThan":"5eb489831a9fd4754f4baf26e6989efb66ce104c","status":"affected","versionType":"git"},{"version":"6ae30d6eb26bce02c48c60074b4306270e2434c1","lessThan":"0f4a767340fad392bd656115b8752005518c9065","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/nfsd/nfs4callback.c","fs/nfsd/nfs4xdr.c"],"versions":[{"version":"6.14","status":"affected"},{"version":"0","lessThan":"6.14","status":"unaffected","versionType":"semver"},{"version":"6.18.50","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.4","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"6.14","versionEndExcluding":"6.18.50"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.2.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14","versionEndExcluding":"7.3-rc1"}]}]}],"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"}}}}