| Message ID | 20230706175804.2249018-1-azeemshaikh38@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | EISA: Replace all non-returning strlcpy with strscpy | expand |
On Thu, Jul 06, 2023 at 05:58:04PM +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]. > 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>
On Thu, 06 Jul 2023 17:58:04 +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]. > In an effort to remove strlcpy() completely [2], replace > strlcpy() here with strscpy(). > No return values were used, so direct replacement is safe. > > [...] Applied, thanks! [1/1] EISA: Replace all non-returning strlcpy with strscpy https://git.kernel.org/kees/c/f2ccf8d13625 Best regards,
diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c index 713582cc27d1..33f0ba11c6ad 100644 --- a/drivers/eisa/eisa-bus.c +++ b/drivers/eisa/eisa-bus.c @@ -60,7 +60,7 @@ static void __init eisa_name_device(struct eisa_device *edev) int i; for (i = 0; i < EISA_INFOS; i++) { if (!strcmp(edev->id.sig, eisa_table[i].id.sig)) { - strlcpy(edev->pretty_name, + strscpy(edev->pretty_name, eisa_table[i].name, sizeof(edev->pretty_name)); return;
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> --- drivers/eisa/eisa-bus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)