Re: [PATCH v3] vsock: ignore empty child namespace mode writes

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Tue, 15 Sep 2026 14:30:50 -0300 you wrote:

__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 calling __vsock_net_mode_string() when *lenp is zero so
that the helper is never invoked with nothing to parse and new_mode is
never read uninitialized. This also prevents an empty write from
locking the current mode.

[...]

Here is the summary with links:
  - [v3] vsock: ignore empty child namespace mode writes
    https://git.kernel.org/netdev/net/c/2ec28c09b320

You are awesome, thank you!
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