Use After Free in Linux
CVE-2026-64261
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.
Vulnerability class: Use-After-Free
EPSS: 0.002 (5.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions 7.2-rc1, 7.2, 7.1.4
- Linux Linux_kernel
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-64261?
- CVE-2026-64261 is a high-severity vulnerability in Linux, classified under Use After Free. CVSS score: 7.8/10. Published 2026-07-25.
- How severe is CVE-2026-64261?
- High severity. CVSS v3 base score is 7.8 out of 10.