{"cve":"CVE-2026-64258","nvd":{"published":"2026-07-25T10:17:05.930","modified":"2026-08-17T05:17:24.453","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse-uring: remove request-less entries from ent_w_req_queue to fix NULL deref\n\nIf a copy into the userspace ring buffer fails, a request will be\nterminated and fuse_uring_req_end() will set ent->fuse_req to NULL but\nit will leave the entry on ent_w_req_queue in FRRS_FUSE_REQ state. This\ncan lead to a NULL deref if the request expiration logic scans\nent_w_req_queue in the window before the entry is moved off it.\n\nFix this by taking the entry off ent_w_req_queue and changing its state\nfrom FRRS_FUSE_REQ to FRRS_INVALID before terminating the request.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-476"],"references":["https://git.kernel.org/stable/c/0a7f33010c0e4cd92937e088a54350381fd0fbf2","https://git.kernel.org/stable/c/0b466cf1b96e191b06b496c4de79da15315c3a9a","https://git.kernel.org/stable/c/1c57a69be962d459c5e705f5cb4355b841b3461c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:46:40.600842820+00:00"},"epss":{"cve":"CVE-2026-64258","score":0.0016,"percentile":0.05162,"date":"2026-10-31"},"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."]}