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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0e4a5a000123d81234e27a2f8187688cf608f755	Patch
https://git.kernel.org/stable/c/1ca605cfa59377f0143fb35b5b01360f37d1b7c4	Patch
https://git.kernel.org/stable/c/1f9156714592356b4fda57beac7eab9c2a462dd3	Patch
https://git.kernel.org/stable/c/5630da218a45ba80f0aba0846cbe8aa655da122b	Patch
https://git.kernel.org/stable/c/65a1c2551f7e16085acbb54aedde1feaa559ba7a	Patch
https://git.kernel.org/stable/c/b5befa80fdbe287a98480effed9564712924add5	Patch
https://git.kernel.org/stable/c/be353caffa8640f5e25fb3714ce8b0cef5e410e5	Patch
https://git.kernel.org/stable/c/e6aa539720c3d8def69683ed0c07cf9faea4e8be	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

19 Oct 2026, 21:17

Type	Values Removed	Values Added
CWE		CWE-362

Information

Published : 2026-07-25 10:17

Updated : 2026-10-19 21:17

NVD link : CVE-2026-64266

Mitre link : CVE-2026-64266

CVE.ORG link : CVE-2026-64266

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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