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.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWEs

CWE-416, CWE-362

Published

2026-07-25

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

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

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