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-rw-r--r--modules/pam_unix/support.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/modules/pam_unix/support.c b/modules/pam_unix/support.c
index 6b8b8020..9b6b19a2 100644
--- a/modules/pam_unix/support.c
+++ b/modules/pam_unix/support.c
@@ -123,9 +123,10 @@ char *PAM_getlogin(void)
D(("PAM_getlogin ttyname: %s", curr_tty));
curr_tty += 5;
setutent();
- strncpy(line.ut_line, curr_tty, sizeof line.ut_line);
+ strncpy(line.ut_line, curr_tty, sizeof(line.ut_line));
if ((ut = getutline(&line)) != NULL) {
strncpy(curr_user, ut->ut_user, sizeof(ut->ut_user));
+ curr_user[sizeof(curr_user) - 1] = '\0';
retval = curr_user;
}
endutent();