diff options
| -rw-r--r-- | include/asm-generic/uaccess.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h index 6d8cab22e29..5dd511b62ce 100644 --- a/include/asm-generic/uaccess.h +++ b/include/asm-generic/uaccess.h @@ -291,6 +291,8 @@ strncpy_from_user(char *dst, const char __user *src, long count) #ifndef strnlen_user static inline long strnlen_user(const char __user *src, long n) { + if (!access_ok(VERIFY_READ, src, 1)) + return 0; return strlen((void * __force)src) + 1; } #endif |