Re: [PATCH] NFS: Prefer strscpy over strlcpy calls

From: Kees Cook
Date: Mon May 22 2023 - 15:40:20 EST


On Fri, 12 May 2023 15:57:49 +0000, Azeem Shaikh wrote:
> strlcpy() reads the entire source buffer first.
> This read may exceed the destination size limit.
> This is both inefficient and can lead to linear read
> overflows if a source string is not NUL-terminated [1].
> Check for strscpy()'s return value of -E2BIG on truncate for safe
> replacement with strlcpy().
>
> [...]

Applied to for-next/hardening, thanks!

[1/1] NFS: Prefer strscpy over strlcpy calls
https://git.kernel.org/kees/c/8ca25e00cf81

--
Kees Cook