CVE-2026-80857: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux: from 6.18.25, before 6.18.50 (fixed in 6.18.50); from 7.0.2, before 7.1 (fixed in 7.1); from 7.1, before 7.2.3 (fixed in 7.2.3)

Published 2026-09-04. Last modified 2026-09-07.