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drm/mediatek: 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/20230522155306.2336889-1-azeemshaikh38@gmail.com
This commit is contained in:
Azeem Shaikh 2023-05-22 15:53:06 +00:00 • committed by Kees Cook
parent 576f0d7a8a
commit 3213bfde11
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/mediatek/mtk_hdmi_ddc.c
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@ -295,7 +295,7 @@ static int mtk_hdmi_ddc_probe(struct platform_device *pdev)
return ret;
}
strlcpy(ddc->adap.name, "mediatek-hdmi-ddc", sizeof(ddc->adap.name));
strscpy(ddc->adap.name, "mediatek-hdmi-ddc", sizeof(ddc->adap.name));
ddc->adap.owner = THIS_MODULE;
ddc->adap.class = I2C_CLASS_DDC;
ddc->adap.algo = &mtk_hdmi_ddc_algorithm;