diff options
Diffstat (limited to 'lib/strncpy_from_user.c')
| -rw-r--r-- | lib/strncpy_from_user.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/lib/strncpy_from_user.c b/lib/strncpy_from_user.c index e304b54c9c7d..b8570a11776d 100644 --- a/lib/strncpy_from_user.c +++ b/lib/strncpy_from_user.c @@ -115,10 +115,11 @@ long strncpy_from_user(char *dst, const char __user *src, long count) kasan_check_write(dst, count); check_object_size(dst, count, false); - user_access_begin(); - retval = do_strncpy_from_user(dst, src, count, max); - user_access_end(); - return retval; + if (user_access_begin(VERIFY_READ, src, max)) { + retval = do_strncpy_from_user(dst, src, count, max); + user_access_end(); + return retval; + } } return -EFAULT; } |