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Vulnerability record · CVE-2026-64261 · published 25 July 2026

CVE-2026-64261: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 0.16% · top 95.4% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Aug 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/23a356e0bd96c8d5fb3ddff069f692bf10cab5c1 Patch
https://git.kernel.org/stable/c/95d7f50aff2a5f71557263ff25b97b2951f32bf8 Patch
https://git.kernel.org/stable/c/d351da75066955144515cb2f9aa959f24a04287a Patch

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Source: NIST National Vulnerability Database (record CVE-2026-64261), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.