{"cve":"CVE-2026-89683","nvd":{"published":"2026-09-11T20:19:55.173","modified":"2026-10-19T09:18:06.670","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: fix dentry ref leak on V4ROOT export filehandle lookup\n\nnfsd_set_fh_dentry() leaks the dentry reference from\nexportfs_decode_fh_raw() when the NFS3_FHSIZE or NFS_FHSIZE\nswitch cases detect NFSEXP_V4ROOT and goto out. The out: label\ncalls exp_put() but never dput(dentry), and fhp->fh_dentry was\nnever assigned so fh_put() cannot compensate.\n\nA crafted NFSv3 filehandle targeting a V4ROOT export's fsid\ntriggers the leak on every request.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/11db8df188b34bdb8c6a3a0bf438e5fc8cd75aca","https://git.kernel.org/stable/c/6247023fbbec1325029f2d5f2a7cdc0f9f9ea15a","https://git.kernel.org/stable/c/c1ae0f973bcba5730871e35976a0ab6878fdac34","https://git.kernel.org/stable/c/d493cf57f4c4dae5396cd6ad41e5c209d0615a81"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-89683","score":0.00175,"percentile":0.06995,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}