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drm/sun4i: hdmi: Replace all non-returning strlcpy with strscpy

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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/20230522155331.2336966-1-azeemshaikh38@gmail.com
This commit is contained in:
Azeem Shaikh 2023-05-22 15:53:31 +00:00 committed by Kees Cook
parent 3213bfde11
commit 8360257608
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/sun4i/sun4i_hdmi_i2c.c
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@ -304,7 +304,7 @@ int sun4i_hdmi_i2c_create(struct device *dev, struct sun4i_hdmi *hdmi)
adap->owner = THIS_MODULE;
adap->class = I2C_CLASS_DDC;
adap->algo = &sun4i_hdmi_i2c_algorithm;
strlcpy(adap->name, "sun4i_hdmi_i2c adapter", sizeof(adap->name));
strscpy(adap->name, "sun4i_hdmi_i2c adapter", sizeof(adap->name));
i2c_set_adapdata(adap, hdmi);
ret = i2c_add_adapter(adap);