{"cve":"CVE-2026-64266","nvd":{"published":"2026-07-25T10:17:06.783","modified":"2026-10-19T21:17:28.587","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: re-lock request before returning from fuse_ref_folio()\n\nfuse_ref_folio() unlocks the request but does not re-lock it before\nreturning. fuse_chan_abort() can end the request and the async end\ncallback (eg fuse_writepage_free()) can free the args while the\nsubsequent copy chain logic after fuse_ref_folio() accesses them,\nleading to use-after-free issues.\n\nFix this by locking the request in fuse_ref_folio() before returning.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416","CWE-362"],"references":["https://git.kernel.org/stable/c/0e4a5a000123d81234e27a2f8187688cf608f755","https://git.kernel.org/stable/c/1ca605cfa59377f0143fb35b5b01360f37d1b7c4","https://git.kernel.org/stable/c/1f9156714592356b4fda57beac7eab9c2a462dd3","https://git.kernel.org/stable/c/5630da218a45ba80f0aba0846cbe8aa655da122b","https://git.kernel.org/stable/c/65a1c2551f7e16085acbb54aedde1feaa559ba7a"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-64266","score":0.00127,"percentile":0.02359,"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."]}