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Azeem Shaikh authored
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(). Direct replacement is safe here since return value of -errno is used to check for truncation instead of sizeof(dest). [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:
Justin Stitt <justinstitt@google.com> Reviewed-by:
Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230830160806.3821893-1-azeemshaikh38@gmail.com Signed-off-by:
Azeem Shaikh authoredstrlcpy() 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(). Direct replacement is safe here since return value of -errno is used to check for truncation instead of sizeof(dest). [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by:
version.c 1.27 KiB