CVE-2026-80857: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free The abort_on_kill path in request_wait_answer() calls fuse_abort_conn() and returns without waiting for FR_FINISHED. If fuse_dev_do_write() is concurrently processing the same request (FR_LOCKED set), the caller frees req->args while it is still being accessed, causing a use-after-free. Fix this by jumping to the existing wait_event(FR_FINISHED) instead of returning early. The wait will not hang because fuse_abort_conn() ensures all requests are ended.

Засегнати продукти

• Linux Linux: 0c7fca880a40a209a9c92be14143996d14b93ff6 преди a8bbb2a60513bf322170903c21462f0bf4f62be2; 204aa22a686bfee48daca7db620c1e017615f2ff преди 715cb86e33cda43f5224cdc3fd5610c0b6a46f7a; 204aa22a686bfee48daca7db620c1e017615f2ff преди 64b0b5cacbd2fea88001464cb712c9dfc795b26e; 300e812b882a174dca675d8028684001ad5826bc; 6.18.25 преди 6.18.50; 7.0.2 преди 7.1
• Linux Linux: 7.1; преди 7.1; 6.18.50 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-2026-80857
• https://nvd.nist.gov/vuln/detail/CVE-2026-80857
• https://git.kernel.org/stable/c/a8bbb2a60513bf322170903c21462f0bf4f62be2
• https://git.kernel.org/stable/c/715cb86e33cda43f5224cdc3fd5610c0b6a46f7a
• https://git.kernel.org/stable/c/64b0b5cacbd2fea88001464cb712c9dfc795b26e