PT-2026-64487 · Linux · Linux

CVE-2026-64266 · Published 2026-07-25 · Updated 2026-07-25

NVD

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.

Related Identifiers

CVE-2026-64266

Affected Products

Linux

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-64266 · Security Note
• https://git.kernel.org/stable/c/b5befa80fdbe287a98480effed9564712924add5 · Note
• https://git.kernel.org/stable/c/1ca605cfa59377f0143fb35b5b01360f37d1b7c4 · Note
• https://git.kernel.org/stable/c/be353caffa8640f5e25fb3714ce8b0cef5e410e5 · Note
• https://git.kernel.org/stable/c/65a1c2551f7e16085acbb54aedde1feaa559ba7a · Note
• https://git.kernel.org/stable/c/1f9156714592356b4fda57beac7eab9c2a462dd3 · Note
• https://git.kernel.org/stable/c/0e4a5a000123d81234e27a2f8187688cf608f755 · Note
• https://git.kernel.org/stable/c/5630da218a45ba80f0aba0846cbe8aa655da122b · Note
• https://git.kernel.org/stable/c/e6aa539720c3d8def69683ed0c07cf9faea4e8be · Note