CVE-2026-80858: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 24fe962c86f55347385933a1b06ca71b60854690 преди a5bb215dbc34b4c6a5e144ea1416bf66450d519f; 24fe962c86f55347385933a1b06ca71b60854690 преди a1bb359c443d048fe5dfd6ca9caf4e3897f3e9aa; 24fe962c86f55347385933a1b06ca71b60854690 преди 42df916e5a5f8fb4b60c8cefb54318d1ec02c580
• Linux Linux: 6.14; преди 6.14; 6.18.51 до 6.18.*; 7.2.3 до 7.2.*; 7.3 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-80858
• https://nvd.nist.gov/vuln/detail/CVE-2026-80858
• https://git.kernel.org/stable/c/a5bb215dbc34b4c6a5e144ea1416bf66450d519f
• https://git.kernel.org/stable/c/a1bb359c443d048fe5dfd6ca9caf4e3897f3e9aa
• https://git.kernel.org/stable/c/42df916e5a5f8fb4b60c8cefb54318d1ec02c580