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Vulnerability Details CVE-2026-64266

In the Linux kernel, the following vulnerability has been resolved: fuse: re-lock request before returning from fuse_ref_folio() fuse_ref_folio() unlocks the request but does not re-lock it before returning. fuse_chan_abort() can end the request and the async end callback (eg fuse_writepage_free()) can free the args while the subsequent copy chain logic after fuse_ref_folio() accesses them, leading to use-after-free issues. Fix this by locking the request in fuse_ref_folio() before returning.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 5.6%
CVSS Severity
CVSS v3 Score 7.8
Products affected by CVE-2026-64266


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