vhost vringh

The Linux kernel received a surgical but important correctness fix for the vhost/vringh dataplane: a check that treated the return from copy_toiter (and related copy_iter helpers) as an error code was replaced with an equality test that verifies the exact number of bytes* were copied, closing a...

The Linux kernel recently received a small but important patch labelled under CVE‑2025‑40051 that tightens how the vhost/vringh code checks return values from copy_from_iter and copy_to_iter; the fix changes the test from “is the result negative” to “did we copy exactly the number of bytes...