Re: [PATCH v2] vsock: ignore empty child namespace mode writes
flat view
From: sashiko-bot@kernel.org
Date: 2026-09-15 14:22:13
__vsock_net_mode_string() returns success without updating new_mode when
the transfer length is zero. Its caller then reads the uninitialized enum
and may permanently store a stack-derived value in the write-once child
mode.
Return before inspecting or storing new_mode when no bytes were
transferred. This also prevents an empty write from locking the current
mode.
Fixes: eafb64f40ca4 ("vsock: add netns to vsock core")
Cc: stable@vger.kernel.org
Signed-off-by: Aldo Ariel Panzardo <redacted>Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review · https://sashiko.dev/#/patchset/20260915141547.3010692-1-qwe.aldo@gmail.com?part=1