CVE-2026-64261 Details
Description
In the Linux kernel, the following vulnerability has been resolved: fuse-uring: Avoid use-after-free in fuse_uring_async_stop_queues fuse_uring_async_stop_queues() might run when the last reference on ring->queue_refs was already dropped. In order to avoid an early destruction a reference on struct fuse_conn is now taken before starting fuse_uring_async_stop_queues() and that reference is only released when that delayed work queue terminates.
A use-after-free vulnerability has been addressed in the Linux kernel's fuse-uring implementation. The issue arose in the function 'fuse_uring_async_stop_queues()', which could be executed after the last reference on 'ring->queue_refs' was released. To prevent premature destruction, a reference to the 'fuse_conn' structure is now acquired before initiating 'fuse_uring_async_stop_queues()'. This reference is only released once the associated delayed work queue has completed. This vulnerability affects the Linux kernel stable tree.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/23a356e0bd96c8d5fb3ddff069f692bf10cab5c1 | kernel.org | Patch |
| https://git.kernel.org/stable/c/95d7f50aff2a5f71557263ff25b97b2951f32bf8 | kernel.org | Patch |
| https://git.kernel.org/stable/c/d351da75066955144515cb2f9aa959f24a04287a | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.14, < 6.18.39 >= 6.19, < 7.1.4 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 17, 2026 | CVE Modified | kernel.org |
| Aug 12, 2026 | Initial Analysis | [email protected] |
| Jul 27, 2026 | CVE Modified | kernel.org |
| Jul 25, 2026 | New CVE Received | kernel.org |