diff options
| author | Azeem Shaikh <azeemshaikh38@gmail.com> | 2023-07-03 16:06:41 +0000 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-07-27 08:51:06 -0700 |
| commit | 61ce78f29a694772c3b2c5c749589682dbdfec2d (patch) | |
| tree | afc9b7a4dc3ab8901917aea3d546cb58af653ecf /arch/um/include | |
| parent | 630fdd592912614a72d00026fdadad72d9ef62eb (diff) | |
um: Remove strlcpy declaration
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>
Link: https://lore.kernel.org/r/20230703160641.1790935-1-azeemshaikh38@gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'arch/um/include')
| -rw-r--r-- | arch/um/include/shared/user.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h index 0347a190429c..981e11d8e025 100644 --- a/arch/um/include/shared/user.h +++ b/arch/um/include/shared/user.h @@ -50,7 +50,6 @@ static inline int printk(const char *fmt, ...) #endif extern int in_aton(char *str); -extern size_t strlcpy(char *, const char *, size_t); extern size_t strlcat(char *, const char *, size_t); extern size_t strscpy(char *, const char *, size_t); |