terminal-util: add paranoid overflow check

2019-03-26 17:22:18 +01:00 · 2019-03-26 17:22:18 +01:00 · 1fd4c4edce
parent f171decd3f
commit 1fd4c4edce
1 changed files with 4 additions and 0 deletions
--- a/src/basic/terminal-util.c
+++ b/src/basic/terminal-util.c
@ -1041,6 +1041,10 @@ int ptsname_malloc(int fd, char **ret) {
                }

                free(c);
+
+                if (l > SIZE_MAX / 2)
+                        return -ENOMEM;
+
                l *= 2;
        }
 }