char **load_enc_file(char *enc_name)
{
    char buf[ENC_BUF_SIZE], *p, *r;
    int i, names_count;
    char **glyph_names;
    set_cur_file_name(enc_name);
    if (!enc_open()) {
        pdftex_fail("cannot open encoding file for reading");
    }
    glyph_names = xtalloc(256, char *);
    for (i = 0; i < 256; i++)
        glyph_names[i] = notdef;
    t1_log("{");
    t1_log(cur_file_name = (char *) nameoffile + 1);
    enc_getline();
    if (*enc_line != '/' || (r = strchr(enc_line, '[')) == NULL) {
        remove_eol(r, enc_line);
        pdftex_fail
           ("invalid encoding vector (a name or `[' missing): `%s'", enc_line);
    }
    names_count = 0;
    r++;                        /* skip '[' */
    skip(r, ' ');
    for (;;) {
        while (*r == '/') {
            for (p = buf, r++;
                 *r != ' ' && *r != 10 && *r != ']' && *r != '/'; *p++ = *r++);
            *p = 0;
            skip(r, ' ');
            if (names_count > 255)
                pdftex_fail("encoding vector contains more than 256 names");
            if (strcmp(buf, notdef) != 0)
                glyph_names[names_count] = xstrdup(buf);
            names_count++;
        }
        if (*r != 10 && *r != '%') {
            if (str_prefix(r, "] def"))
                goto done;
            else {
                remove_eol(r, enc_line);
                pdftex_fail
       ("invalid encoding vector: a name or `] def' expected: `%s'", enc_line);
            }
        }
        enc_getline();
        r = enc_line;
    }
  done:
    enc_close();
    t1_log("}");
    cur_file_name = NULL;
    return glyph_names;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.