CVE-2026-80858

CVE CVE-2026-80858EUVD EUVD-2026-71308Published 2026-09-04T15:55:12.000ZLast changed 2026-09-11T09:57:11.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: fuse: publish io-uring queues with release semantics fuse_uring_create_queue() initializes a fuse_ring_queue and then publishes the pointer into ring->queues[qid] with WRITE_ONCE() under the fch->lock. There are several readers that may concurrently be fetching that pointer locklessly and then deferencing it. WRITE_ONCE() doesn't ensure ordering of the queue's field initialization before the ring->queues[qid] pointer assignment. The queue must be published with smp_store_release() so the field initialization is guaranteed to happen before. Readers in paths where the read may happen concurrently with the store need to use READ_ONCE() because any race involving a plain access is undefined.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 7.2.3; patch: 0; 6.14; patch: 6.18.51; 24fe962c86f55347385933a1b06ca71b60854690 <a1bb359c443d048fe5dfd6ca9caf4e3897f3e9aa; 24fe962c86f55347385933a1b06ca71b60854690 <a5bb215dbc34b4c6a5e144ea1416bf66450d519f; patch: 7.3-rc1; 24fe962c86f55347385933a1b06ca71b60854690 <42df916e5a5f8fb4b60c8cefb54318d1ec02c580

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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