CVE-2026-64260 fuse-uring: Avoid queue->stopped races and set/read that value under lock

What is CVE-2026-64260?

CVE-2026-64260 is a high-severity vulnerability in Linux kernel, published on 25 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

fuse-uring: Avoid queue->stopped races and set/read that value under lock

There are several readers of queue->stopped that check the value under lock, but fuse_uring_commit_fetch() did not and actually the value was not set under the lock in fuse_uring_abort_end_requests() either. Especially in fuse_uring_commit_fetch it is important to check under a lock, because due to races 'struct fuse_req' might be freed with fuse_request_end, but another thread/cpu might already do teardown work.

Weakness: CWE-362

Which versions are affected by CVE-2026-64260?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-64260?

Apply the vendor's patch.

Is CVE-2026-64260 being exploited?

There is no known exploitation of CVE-2026-64260 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-64260, DEBIAN-CVE-2026-64260, GHSA-985w-mqgj-6gfr, ROOT-OS-UBUNTU-2204-CVE-2026-64260, UBUNTU-CVE-2026-64260.