Couple of hardening changes for utils flagged by kres (#42732)

2026-06-25 14:31:35 +02:00
parent e4000c0dbf d30e87ea49
commit 3498b84013
4 changed files with 90 additions and 2 deletions
@@ -287,6 +287,12 @@ static size_t previous_ansi_sequence(const char *s, size_t length, const char **

        /* Locate the previous ANSI sequence and save its start in *ret_where and return length. */

+        if (length < 2) {
+                /* Need at least two bytes for an ANSI sequence */
+                *ret_where = NULL;
+                return 0;
+        }
+
        for (size_t i = length - 2; i > 0; i--) {  /* -2 because at least two bytes are needed */
                size_t slen = ansi_sequence_length(s + (i - 1), length - (i - 1));
                if (slen == 0)