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of/flattree: Replace all non-returning strlcpy with strscpy 

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].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230530162202.983558-1-azeemshaikh38@gmail.com
This commit is contained in:
Azeem Shaikh 2023-05-30 16:22:02 +00:00 committed by Kees Cook
parent bb07972fd6
commit fdd932efae
1 changed files with 1 additions and 1 deletions
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2
arch/microblaze/kernel/prom.c
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@ -20,7 +20,7 @@ void __init early_init_devtree(void *params)
early_init_dt_scan(params);
if (!strlen(boot_command_line))
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
strscpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
memblock_allow_resize();